Skocz do pozycji: 1.

Tytuł:

Content of carotenoids in roots of seventeen cultivars of Daucus carota L.

Autorzy:

Mech-Nowak, Aleksandra
Świderski, Adam
Kruczek, Michał
Łuczak, Irena
Kostecka-Gugała, Anna

Powiązania:

https://bibliotekanauki.pl/articles/1039802.pdf

Data publikacji:

2012

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

carotenoid
carrot
antioxidant activity

Opis:

The aim of this study was to compare the content of carotenoids in seventeen cultivars of carrots grown in Poland. Conventional orange cultivars with rarely grown were compared: white, yellow and purple with yellow core cultivars. To determine the content of carotenoids, extracts from lyophilized carrot roots were prepared and analyzed by spectrophotometric as well as HPLC methods with DAD detector. The highest content of carotenoids was found in cultivars: 'Korund F1' (48 mg/100g of fresh weight) and 'Salsa F1' (36 mg/100g of fresh weight). The antioxidant properties of selected cultivars were compared using the DPPH method.

Źródło:

Acta Biochimica Polonica; 2012, 59, 1; 139-141
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

The application of modified layered double hydroxides in selective catalytic reduction of nitrogen oxides by ammonia (NH3-SCR)

Autorzy:

Szymaszek, Agnieszka
Motak, Monika
Samojeden, Bogdan

Powiązania:

https://bibliotekanauki.pl/articles/778916.pdf

Data publikacji:

2020

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Yerba
antioxidant activity
infusions
minerals

Opis:

Selective catalytic reduction with ammonia (NH₃-SCR) is very efficient DeNOx technique. According to some problems with the commercial catalyst, novel one should be prepared. Hydrotalcites are potential precursors of the new catalysts of NH₃-SCR. In this paper, several attempts to apply these materials in NH₃-SCR are presented.

Źródło:

Polish Journal of Chemical Technology; 2020, 22, 1; 61-67
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Effect of the Yerba mate (Ilex paraguariensis) brewing method on the content of selected elements and antioxidant potential of infusions

Autorzy:

Janda, Katarzyna
Jakubczyk, Karolina
Łukomska, Agnieszka
Baranowska-Bosiacka, Irena
Rębacz-Maron, Ewa
Dec, Karolina
Kochman, Joanna
Gutowska, Izabela

Powiązania:

https://bibliotekanauki.pl/articles/779918.pdf

Data publikacji:

2020

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Yerba
antioxidant activity
infusions
minerals

Opis:

Yerba mate is a source of biologically active substances. The aim was to determine whether the place of origin of Yerba and the brewing method have any influence on the levels of Ca, Mg and Fe and antioxidant activity of infusions. Samples were steeped in cold water (25^o C) and hot water (three consecutive infusions with 85^o C water). Infusions had a high antioxidant activity and high Mg level. The levels of elements and the antioxidant activity were influenced by the brewing method. There were no significant differences in the examined parameters depending on the country of origin. The results on the levels of elements and the antioxidant activity indicate that the most efficient brewing method was infusion in hot water. The highest levels of elements were found in first infusions, with the highest antioxidant activity in the third infusions.

Źródło:

Polish Journal of Chemical Technology; 2020, 22, 1; 54-60
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

BIOLOGICAL ACTIVITIES OF DIFFERENT EXTRACTS FROM ALLIUM URSINUM LEAVES

Autorzy:

Tomovic, Marina T.
Krivokapic, Milos Z.
Jakovljevic, Vladimir L.
Sovrlic, Miroslav M.
Bradic, Jovana V.
Petkovic, Anica M.
Radojevic, Ivana D.
Brankovic, Snezana R.
Comic, Ljiljana R.
Andjic, Marijana M.
Kocovic, Aleksandar G.

Powiązania:

https://bibliotekanauki.pl/articles/895571.pdf

Data publikacji:

2020-02-29

Wydawca:

Polskie Towarzystwo Farmaceutyczne

Tematy:

antioxidant activity
antimicrobial activity
Allium ursinum

Opis:

The aim of our study was to evaluate and compare antioxidant and antimicrobial activity of aqueous, methanol and chloroform extracts of leaves of Allium ursinum (A. ursinum). Total phenol (TPC) and flavonoid (TFC) content in extracts and antioxidant activity using DPPH (1,1- diphenyl-2-picrylhydrazyl) assay were determined spectrophotometrically. In vitro antimicrobial activity was tested by microdilution method. The highest TPC and TFC were observed for chloroform extract. The extracts showed different degrees of antimicrobial activity. The intensity of antimicrobial action varied depending on the group of microorganism and the type of extracts. Our results demonstrated rational basis for the traditional uses of A. ursinum in alleviation of oxidative stress and against various pathogenic microorganisms.

Źródło:

Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 121-129
0001-6837
2353-5288

Pojawia się w:

Acta Poloniae Pharmaceutica - Drug Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Phytochemical Screening, Antioxidant and Antimicrobial Activities of Indoneesiella echioides (L.) Nees Leaves

Autorzy:

Elaiyaraja, A.
Chandramohan, G.
Mariajancyrani, J.
Jayabharathi, G.

Powiązania:

https://bibliotekanauki.pl/articles/1193940.pdf

Data publikacji:

2015

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Antimicrobial activity
Antioxidant activity
Indoneesiella echioides
Phytochemical screenings

Opis:

Indoneesiella echioides (or) Andrographis echioides (L) Nees is an important herb widely distributed in south India. This is commonly known as False Water willow. Indoneesiella echioides (L) Nees is a traditional Indian medicine; the whole plant is highly medicinal value such as the leaf juice of this plant is used to cure fever. The plant was extracted using n-hexane, chloroform, ethyl acetate, acetone, butanol, ethanol and methanol. The present study was to be determined the preliminary phytochemical screening, antioxidant and antimicrobial activities of Indoneesiella echioides (L) Nees leaves.

Źródło:

World Scientific News; 2015, 21; 51-63
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

The influence of water on the estimation of antioxidant properties of essential oils

Autorzy:

Olszowy, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/764073.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

antioxidant activity
essential oils
water impact

Opis:

This study discusses the influence of water content in measuring system on the estimation of antioxidant activity of essential oils. The presented data show that the antioxidant activity of thyme, clove, summer savory and basil essential oils strongly depends on water concentration what has important impact on the estimation of correct and reliable antioxidant activity of examined essential oils.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2015, 70, 2
2083-358X

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Development of an electrochemical method for the measurement of antioxidant capacity of pure compounds and natural substances extracts

Autorzy:

Lanez, T.
Rebiai, A.

Powiązania:

https://bibliotekanauki.pl/articles/411914.pdf

Data publikacji:

2013

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

antioxidant activity
superoxide anion radical
electrochemistry
DDPH

Opis:

A new method has been developed to measure total antioxidant activity of antioxidants in foods and natural substances without use of standard antioxidants and without use of calibration curves plotting. It is based on measuring the oxidation peak current of superoxide anion radical electrochemically generated by reduction of commercial molecular oxygen in dimethylformamide. The method has been validated using 7 known standard antioxidants and the results have been compared with those obtained by the DPPH and molybdate ion reduction assays. Measured antioxidant capacities were highly correlated with those obtained using DPPH (r2 = 0.549) and molybdate ion reduction assay (r2 = 0.434).

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2013, 1; 46-54
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Antioxidant activity of extract of pea and its fractions of low molecular phenolics and tannins

Autorzy:

Amarowicz, Ryszard
Troszyńska, Agnieszka

Powiązania:

https://bibliotekanauki.pl/articles/2051047.pdf

Data publikacji:

2003

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

pea
antioxidant activity
antiradical properties
phenolics
tannins

Opis:

Phenolic compounds were extracted from pea (Pisum sativum) seeds using 80% aqueous acetone. Crude extract was applied onto a Sephadex LH-20 column. Fraction I of low molecular phenolic compounds was eluted from the column by ethanol. Fraction II of tannins was obtained using water-acetone (1:1; v/v) as mobile phases. Phenolic compounds present in extract and its fractions showed antioxidant and antiradical properties investigated using a β-carotene-linoleate model system, Total Antioxidant Activity (TAA) method, DPPH radical scavenging activity and reducing power. The results of assays performed were the highest when tannins (fraction II) were tested. For example, TAA of tannin fraction was 2.48 µmol Trolox/mg, whereas the extract and fraction I showed only 0.30 and 0.22 µmol Trolox/mg, respectively. The content of total phenolics in fraction II was found the highest (113 mg/g). The content of tannins in this fraction determined using the vanillin method and expressed as absorbance units at 500 nm per 1 g was 368. The HPLC analysis of pea crude extract showed the presence of such phenolic compounds as vanillic, caffeic, p-coumaric, ferulic and sinapic acids (after basic hydrolysis), quercetin and kaempherol, procyanidin B2 and B3.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2003, 53, 1s; 10-15
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

TOTAL PHENOLIC AND FLAVONOID CONTENTS, ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF SELECTED HONEYS AGAINST HUMAN PATHOGENIC BACTERIA

Autorzy:

Živković, Jelena
Sunarić, Slavica
Stanković, Nemanja
Mihajilov-Krstev, Tatjana
Spasić, Ana

Powiązania:

https://bibliotekanauki.pl/articles/895587.pdf

Data publikacji:

2019-08-30

Wydawca:

Polskie Towarzystwo Farmaceutyczne

Tematy:

honey
antioxidant activity
antimicrobial activity
phenolic compounds
colour intensity

Opis:

The study analyzed colour intensity, the total phenolic and flavonoid contents, as well as antioxidant and antibacterial activities of honeys from Serbia. All the tested honeys contained considerable levels of phenolics. The highest phenolic content was obtained in forest honey - 1389.71 mg gallic acid equivalents/kg. High levels of phenolics and flavonoids were also determined in honeydew, meadow and oregano honeys. The radical scavenging activity measured by DPPH method in linden and forest honey was 0.45 and 2.75 mmol Trolox equivalents/kg, respectively. The ferric reducing potential was the greatest in forest honey - 6.04 mmol Fe2+/kg. Darker honeys had a greater phenolic content and antioxidant activity. The antimicrobial activity of honeys against six bacterial strains isolated from human material were studied using a microwell dilution assay. The minimal inhibitory concentration of honeys ranged from 6.25% w/w (for oregano honey against Enterococcus faecalis and honeydew honey against Streptococcus pneumoniae) to >50% w/w (meadow honey against Staphylococcus aureus). The minimal bactericidal concentration ranged from 12.5% w/w (honeydew and bee pollen enriched honey against E. faecalis) to >50% w/w. Higher values of antimicrobial activities were found in honeydew, oregano, and forest honeys, while meadow honey showed the lowest antimicrobial activity. Analyzed honeys exhibited a strong antioxidant and broad-spectrum antibacterial activity against multidrug-resistant pathogenic bacteria. Phenolic compounds, especially in dark amber forest and honeydew honey, as well as in amber oregano honey, may contribute to their efficacy in therapeutic administration.

Źródło:

Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 4; 671-681
0001-6837
2353-5288

Pojawia się w:

Acta Poloniae Pharmaceutica - Drug Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Biological activities and chemical composition of solvent extracts of Stoechospermum marginatum (C. Agardh)

Autorzy:

Esmaeili, Akbar
Khakpoor, Marjan

Powiązania:

https://bibliotekanauki.pl/articles/1039656.pdf

Data publikacji:

2012

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

brown seaweed
antibacterial activity
Stoechospermum marginatum
extract
antioxidant activity

Opis:

The objective of this study was to evaluate the chemical composition CH3OH-CH2Cl2 (1:1) extract and biological activities of various extracts derived from the aerial parts of the brown marine alga Stoechospermum marginatum (C. Agardh). Gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS) were used to analyze the composition of the essential oil. Total phenolics assay demonstrated a high value in hexane extract (HE), with a lower value for chloroform extract (CE), and the lowest value for methanol extract (ME). DPPH (2,2-diphenyl-1-picrylhydrazyl) assay showed that extracts of S. marginatum possess radical scavenging activity (RSA). Tests of the antioxidant property of the extracts revealed both electron and hydrogen transfer mechanisms. The antibacterial activity of the ME, CE, and HE as well as an ethanol extract was estimated against seven Gram-positive and Gram-negative bacteria. The ethanol extract showed the highest antibacterial activity, and the HE showed the lowest.

Źródło:

Acta Biochimica Polonica; 2012, 59, 4; 581-585
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Synthesis, Characterization, In-Vitro Antimicrobial Evaluation and Antioxidant Studies of Some Isoxazoline Derivatives

Autorzy:

Vishnupriya, P.
Rubala mary, M.

Powiązania:

https://bibliotekanauki.pl/articles/1112444.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Chalcone
antibacterial
antifungal
antioxidant activity
isoxazole
synthesis

Opis:

The tremendous rise in development of resistance to antimicrobials has created an alarming situation for researchers and clinicians. In this regard, an attempt has been made to develop a series of azole-based derivatives. The presented study consists of the design and synthesis of some newer derivatives by incorporating the isoxazole nucleus in the pharmacophore. These are also characterized physicochemically and by spectral means (IR and microanalysis). Moreover, the antioxidant activity of these derivatives was assessed using DPPH radical scavenging methods Finally, all of the newly isolated compounds were tested for their antimicrobial activities. Herein, antimicrobial screening using the agar disc diffusion method revealed that the majority of the derivatives are most active.

Źródło:

World News of Natural Sciences; 2018, 18, 2; 72-78
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Evaluation of antioxidactivity of green and black tea (Camellia sinensis) and rooibos (Aspalathus linearis) tea extracts by means of hplc with reaction detector

Autorzy:

Milašiene, R.
Rawicka, K.
Kornyšova, O.
Ligor, M.
Maruška, A.
Buszewska, B.

Powiązania:

https://bibliotekanauki.pl/articles/346957.pdf

Data publikacji:

2007

Wydawca:

Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej

Tematy:

antioxidant activity
HPLC
reaction detector
DPPH
tea

Opis:

Antioxidants are chemical compounds that scavenge free radicals in organisms and protect most important biomolecules such as DNA, proteins, lipids from their damaging activity. Antioxidants reduce a risk of cancer, inflammations, arthritis, cardiovascular diseases and others. The objective of this study was to prepare extracts of different tea species (Camellia sinensis, Aspalathus linearis) in order to compare their antioxidant and radical scavenging activities using reaction detection. Methanolic black, green and red tea extracts were prepared. Reaction detection was used for on-line determination of free radicals of 2,2-diphenyl-1- picrylhydrazil (DPPH) binding by high performance liquid chromatography.

Źródło:

Ars Separatoria Acta; 2007, 5; 27-33
1731-6340

Pojawia się w:

Ars Separatoria Acta

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Karotenoidy rola biologiczna i występowanie w owocnikach grzybów
Biological function of carotenoids and their occurrence in the fruiting bodies of mushrooms

Autorzy:

Muszyńska, Bożena
MASTEJ, Małgorzata
SUŁKOWSKA – ZIAJA, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/1033726.pdf

Data publikacji:

2016

Wydawca:

Zakład Opieki Zdrowotnej Ośrodek Umea Shinoda-Kuracejo

Tematy:

"antioxidant activity"
"carotenoids"
"edible mushrooms"
"β
β-carotene"

Opis:

Due to the valuable properties of carotenoidsthe interest in new methods of obtaining them is still increasing. For this purpose, since the 60s of the twentieth century, scientists conducted numerous studies to recognize the processes in which carotenoids could be produced . Carotenoids, revealing a strong antioxidant activity, act as free radical scavengers. These compounds can support many beneficial processes such as the stimulation of the immune system, the modulation of intracellular signaling pathways, the regulation of the cell cycle and apoptosis as well as theregulation of growth factors. Carotenoids were determined by spectrophotometric analysis in the following fungal species: Leucopaxillus giganteus, Sarcodon imbricatus, Lactarius piperatus, Lactarius deliciosus, Agaricus arvensis, Agaricus bisporus, Agaricus romagnesii, Agaricus silvaticus, Agaricus silvicola, Hypholoma fasciculare, Calocybe gambosa, Craterellus cornucopioides, Marasmius oreades. High performance liquid chromatography (HPLC) coupled with a UV detector detected β,β-carotene in Agaricus bisporus, Polyporus squamosus, Lepista nuda, Russula delica, Verpa conica, Pleurotus ostreatus and Hypsizgus marmoreus. β-carotene and lycopene were also found in three wild species of edible mushrooms: Leucopaxillus giganteus, Sarcodon imbricatus and Agaricus arvensi. These compounds were isolated in several species of the family Cantharellus as well. One example is Cantharellus cibarius, which contains mainly β,β-carotene and minor amounts of lycopene, α-carotene and other carotenoids, which may be δ – and γ – isomers.

Źródło:

Medicina Internacia Revuo; 2016, 27, 107; 113-122
0465-5435

Pojawia się w:

Medicina Internacia Revuo

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

BIOLOGICAL ACTIVITY AND POLYPHENOL CONTENT IN SELECTED HERBAL TEA BLENDS USED IN DIABETES

Autorzy:

Bylka, Wiesława
Studzińska-Sroka, Elżbieta
Czapska, Izabela

Powiązania:

https://bibliotekanauki.pl/articles/895583.pdf

Data publikacji:

2019-12-29

Wydawca:

Polskie Towarzystwo Farmaceutyczne

Tematy:

antioxidant activity
Herbal blends
Antidiabetes
α-Glucosidase inhibition

Opis:

This study aimed to evaluate the antioxidant properties, α -glucosidase inhibitory activity, and the total content of polyphenols and flavonoids in the selected antidiabetic herbal blends (1-6), used traditionally in diabetes. The strongest antioxidant activity (DPPH and CUPRAC) was observed in extracts from blends 1 and 6 (IC50 <70 μg/ml, IC0,5 <110 μg/ml, respectively). Extracts from these blends also contained most of the polyphenolic compounds (>40 mg GAE/g), had a high content of flavonoids (6 - 10.96 mg QE/g, 1 - 7.51 mg QE/g) and the highest α-glucosidase inhibiting capacity (for 1 >90%, for 6 >90% and 5,55%, while for acarbose 1.76% and 0.93% at the 100 μg/ml and 10 μg/ml, respectively).The antioxidant activity of 1 and 6 correlated with the content of polyphenols and α-glucosidase inhibitory properties and indicates the existence of this mechanism in supporting the treatment of type 2 diabetes and diabetic complications by the above preparations.

Źródło:

Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 6; 1037-1042
0001-6837
2353-5288

Pojawia się w:

Acta Poloniae Pharmaceutica - Drug Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Total Phenolic, Flavonoid Contents and Antioxidant Activities of Honey and Propolis Collected from the Region of Laghouat (South of Algeria)

Autorzy:

Bakchiche, Boulanouar
Habati, Mounir
Benmebarek, Ahmed
Gherib, Abdelaziz

Powiązania:

https://bibliotekanauki.pl/articles/1114189.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Antioxidant Activity
DPPH
FRAP
Honey
Phenolic Extracts
Propolis

Opis:

The aim of this study was to determine total phenolic and flavonoid contents and to evaluate the antioxidant activities of two honeys and one propolis sample, collected from the region of Laghouat (South of Algeria). Total phenolic content were determined by using Folin-Ciocalteu reagent as gallic acid equivalent, while flavonoids content was assessed by means of the AlCl3 method as Rutin equivalent. Antioxidant activities of the honeys and propolis were examined by two different methods, namely, scavenging of free radical 2,2-diphenyl-1-picrylhydrazyl and reducing power. The antioxidant activities were compared with standard antioxidants such as Ascorbic acid, BHT and Trolox. The highest level of phenolic was 2385 mg Gallic acid per 100g sample, the highest level of flavonoid was 379 mg Rutin per 100g sample, while the highest protein content was 1177 mg per 100g sample, DPPH (0.026 mg/ml) and TEAC (0.0015) were detected especially in the propolis sample, indicating that it holds good antioxidant properties. A strong positive correlation was found between phenolics, flavonoids, DPPH and TEAC, indicating that in addition to total phenolic content, flavonoid and protein concentrations are good indicators of the antioxidant potential of propolis and honey.

Źródło:

World News of Natural Sciences; 2017, 11; 91-97
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Bioactive properties of elderflowers (Sambucus nigra L.)

Autorzy:

Młynarczyk, Karolina
Walkowiak-Tomczak, Dorota

Powiązania:

https://bibliotekanauki.pl/articles/1178436.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Sambucus nigra L.
antioxidant activity
elderflower
phenolic compounds

Opis:

Elderflower is a valuable herbal raw material widely used in food, pharmaceutical and cosmetic industry. It is a rich source of bioactive compounds, such as polyphenols (e.g. chlorogenic acid, rutin, quercetin), that are responsible for their health benefits. Elderberry flowers demonstrate mainly diaphoretic, antipyretic, diuretic, antibacterial and anti-inflammatory properties and have been used in folk medicine as remedy for various ailments and diseases. The aim of the study was to evaluate selected bioactive properties of fresh and dried elderberry flowers, depending on the origin. Flowers were collected from three locations of wild elderberry shrubs and from three cultivars (Sampo, Haschberg, Samyl) growing on plantation. Methanolic extracts of fresh and dried flowers were analyzed in terms of the antioxidant activity using ABTS radical method and the total phenolic content by Folin-Ciocalteau reagent method. The results were statistically analyzed by Anova in Statistica 12.5 program. The obtained results indicate that drying process causes a deterioration of bioactive properties of elder flowers. Fresh flowers demonstrated significantly higher antioxidant activity as well as higher total phenolic content than dried flowers. Furthermore, flowers of wild elderberry differed from flowers of cultivated elderberry. In most cases, flowers of cultivars showed higher values of analyzed parameters compared to the wild elder flowers. The highest average antioxidant activity and the highest average content of total polyphenols was found in flowers of Sampo cultivar.

Źródło:

World Scientific News; 2017, 73; 114-118
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Effect of apple and rosehip pomaces on colour, total phenolics and antioxidant activity of corn extruded snacks

Autorzy:

Drożdż, W.
Tomaszewska-Ciosk, E.
Zdybel, E.
Boruczkowska, H.
Boruczkowski, T.
Regiec, P.

Powiązania:

https://bibliotekanauki.pl/articles/778687.pdf

Data publikacji:

2014

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

apple pomace
rosehip pomace
extrusion
polyphenols
antioxidant activity

Opis:

Extrusion cooking technology was applied for obtaining corn extrudates fortifi ed with various level (10–20%) of rosehip pomace powder or apple pomace powder. The total polyphenols content, antioxidant activities (ABTS), organoleptic properties and colour of the extrudates were determined. Pomace addition increased the level of total polyphenols content and antioxidant activity in obtained corn – pomace extrudates, especially in samples enriched with rosehip pomace. Extrudates with 20% of rosehip pomace addition characterized the highest polyphenols content and antioxidant activity. Only the slight decrease of some quality features – shape and size, taste and fl avour, structure and colour of obtained extrudates was observed. Sample with fruit pomace addition showed increasing consistency evaluation. The extruded products by utilising fruit by-products got good evaluation of panelists and can be an excellent source of bioactive compounds in the daily human diet.

Źródło:

Polish Journal of Chemical Technology; 2014, 16, 3; 7-11
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:

Polifenole - źródło naturalnych przeciwutleniaczy
Polyphenols - a source of natural antioxidants

Autorzy:

Sadowska, A.
Świderski, F.
Kromołowska, R.

Powiązania:

https://bibliotekanauki.pl/articles/227512.pdf

Data publikacji:

2011

Wydawca:

Wyższa Szkoła Menedżerska w Warszawie

Tematy:

polifenole
flawonoidy
aktywność przeciwutleniająca
polyphenols
flavonoids
antioxidant activity

Opis:

W artykule omówiono charakterystykę związków fenolowych, ich podział, budowę a także występowanie w surowcach żywnościowych. Przedstawiono również znaczenie polifenoli w kształtowaniu jakości żywności oraz ich funkcję jako przeciwutleniaczy.
This article discusses the characteristics of phenolic compounds, their distribution, structure and occurrence in food products. Also the importance of polyphenols in shaping the quality of food and their role as antioxidants is here shown.

Źródło:

Postępy Techniki Przetwórstwa Spożywczego; 2011, 1; 108-111
0867-793X
2719-3691

Pojawia się w:

Postępy Techniki Przetwórstwa Spożywczego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

Preparaty zawierające algi źródłem substancji prozdrowotnych
Algae preparations as a source of beneficial healthy substances

Autorzy:

Jękot, Barbara
RZEWIŃSKA, Aleksandra
HAŁASZUK, Patrycja
ROJOWSKI, Jacek
MUSZYŃSKA, Bożena

Powiązania:

https://bibliotekanauki.pl/articles/1034034.pdf

Data publikacji:

2016

Wydawca:

Zakład Opieki Zdrowotnej Ośrodek Umea Shinoda-Kuracejo

Tematy:

" Spirulina"
"Arthrospira sp"
"Eucaryot
"anti-aging activity"
"antioxidant activity"
Algae"

Opis:

Algae used in OTC preparations and as functional food are available in the form of finished formulations: powders – lyophilisates, tablets, pills, capsules, and are widely used in cosmetics. In these formulations most commonly used species of algae is cyanobacteria: Arthrospira platensis (Spirulina platensis) and Arthrospira maxima (Spirulina maxima), species of red algae – red algae of the genus Porphyra: Porphyra yezoensis and Porphyra tenera and brown algae – Fucus vesiculosus and green algae for example: Chlorella vulgaris. They are used in cosmetology, pharmacy, food industry, agriculture and environmental protection. Hence, getting to know the current state of the market and knowledge of the preparations containing algae and the promotion of knowledge about their effectiveness is expedient to influence effectively on the prevention of civilization diseases. Conducting a survey on knowledge of the preparations of algae, efficiency and preventive properties may allow to know the current state of knowledge in Poland, about the development of effective promotion in order to use of them. The aim of the study was to assess the knowledge and the possibility of using supplements and food additives containing algae and assessment of the effectiveness of activities in the first reinforcement and anti-aging preparations containing algae in the studied groups of people. Algae due to the fact that are a source of many substances such as amino acids, proteins, minerals, vitamins, polysaccharides, lipids, and polyamides, which are necessary for the proper functioning of the human body, have been used in various industries.

Źródło:

Medicina Internacia Revuo; 2016, 27, 106; 4-10
0465-5435

Pojawia się w:

Medicina Internacia Revuo

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

Maturation of bovine oocytes under low culture temperature decreased glutathione peroxidase activity of both oocytes and blastocysts

Autorzy:

Şen, U.

Powiązania:

https://bibliotekanauki.pl/articles/2087228.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

bovine
temperature
antioxidant activity
oxidative stress
oocytes
blastocysts

Źródło:

Polish Journal of Veterinary Sciences; 2021, 24, 1; 93-99
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

Evaluation of phytochemical constituents and antioxidant potential of hydro-alcoholic and aqueous extracts of Murraya koenigii L. and Ficus carica L.

Autorzy:

Farooq, S.A.
Singh, R.
Saini, V.

Powiązania:

https://bibliotekanauki.pl/articles/2048978.pdf

Data publikacji:

2019

Wydawca:

Instytut Włókien Naturalnych i Roślin Zielarskich

Tematy:

antioxidant activity
Ficus carica
Murraya koenigii
aktywność antyoksydacyjna

Opis:

Introduction: Murraya koenigii L. and Ficus carica L. have been traditionally used in folk medicine for treating several diseases. Objective: The present study was proposed to investigate the phytochemical constituents and antioxidant potential of hydro-alcoholic and aqueous extracts of leaves of M. koenigii and dried fruits of F. carica. Methods: Phytochemical screening was performed using different methods and antioxidant activity was evaluated by measuring total phenolic content, total antioxidant capacity (TAOC), hydrogen peroxide (H2O2) scavenging activity, DPPH radical-scavenging activity, reducing power assay, nitric oxide radical scavenging activity, and superoxide radical-scavenging activity. Results: The results showed that the hydro-alcoholic and aqueous extracts of leaves of M. koenigii and dried fruits of F. carica possess a significant quantity of flavonoids, saponins, terpenoids (9.0%, 0.9%, 0.6% and 7.3%, 8.7%, 0.44%, respectively) and also possess a significant antioxidant activity as evaluated by employing different antioxidant assays. Conclusion: It may be concluded that the hydro-alcoholic and aqueous extracts of leaves of M. koenigii and dried fruits of F. carica exhibit significant antioxidant activity.

Źródło:

Herba Polonica; 2019, 65, 4; 7-17
0018-0599

Pojawia się w:

Herba Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Iridoids from Cornus mas L. and their potential as innovative ingredients in cosmetics

Autorzy:

Nizioł-Łukaszewska, Z.
Wasilewski, T.
Bujak, T.
Osika, P.

Powiązania:

https://bibliotekanauki.pl/articles/780034.pdf

Data publikacji:

2017

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

dogwood
antioxidant activity
zein test
tyrosinase inhibition
iridoids

Opis:

Dogwood berries represent a valuable source of a variety of active ingredients. A group that deserves special attention comprises iridoids – compounds with potent antioxidant, antiinflammatory and antibacterial properties. The present study is an attempt to obtain an innovative plant material from dogwood berries. To this end, water and water/ethanol-based extracts (1:1) were prepared and, as the next step, an iridoids-rich fraction was isolated. The total content of iridoids was determined spectrophotometrically, and antioxidant properties of the isolates were concurrently assessed. Additionally, skin whitening activity of isolated fractions was assessed on the basis of tyrosinase inhibition measurement. The testing schedule also involved the formulation of model washing systems based on anionic surfactants. The effect of adding the fractions obtained by the above method on the irritant potential was assessed by determining the zein number.

Źródło:

Polish Journal of Chemical Technology; 2017, 19, 4; 122-127
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

Antioxidant activity of rye bread enriched with milled buckwheat groats fractions

Autorzy:

Zmijewski, M.
Sokol-Letowska, A.
Pejcz, E.
Orzel, D.

Powiązania:

https://bibliotekanauki.pl/articles/876671.pdf

Data publikacji:

2015

Wydawca:

Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny

Tematy:

antioxidant activity
rye bread
buckwheat
flavonoids
rutin
quercetin
polyphenol

Opis:

Background. Buckwheat, despite its broad nutritional benefits, is still not widely appreciated grain. It contains a protein with preferred amino acid composition and it is a valuable source of micronutrients and vitamins of the B group and vitamin E. Moreover, buckwheat groats have a high amount of polyphenols, including flavonoids and flavones. Eating rye bread is beneficial due to its high content of dietary fiber, phenolic acids and characteristic taste and aroma. Therefore, the use of rye flour and buckwheat mill products for bread may allow obtaining a product of high nutritional value and flavor. Objective. The aim of the study was to evaluate the influence of buckwheat products addition and baking process on the antioxidant properties of rye-buckwheat blends and breads. Material and methods. Experimental material was rye flour type 580 and buckwheat flour, wholegrain flour and bran obtained by grinding buckwheat groats. Buckwheat products share was 20 and 35%. The control was the rye flour. In the rye-buckwheat blends and bread loaves, the contents of selected flavonoids by HPLC method, total polyphenols content by Folin-Ciocalteu method and the antioxidant activity by the DPPH˙ radical scavenging method were determined. Results. Buckwheat bran was significantly richer in total polyphenols, rutin, quercetin, orientin and isoorientin than other buckwheat products and rye flour. Bread after baking contained similar amount of total polyphenols and quercetin and have a comparable ability to scavenge 1,1diphenyl-2-picrylhydrazyl radicals (DPPH˙) than the corresponding blends. Baking process negatively affected the amount of rutin, orientin and isoorientin. Conclusions. The use of buckwheat bran as a replacement for wheat flour in bread significantly increases its nutritional value. The process of baking unequally affects the content of particular groups of antioxidant compounds.
Wprowadzenie. Gryka mimo swoich wszechstronnych właściwości prozdrowotnych, nie jest jeszcze wystarczająco docenionym zbożem. Zawiera ona między innymi białko o bardzo korzystnym składzie aminokwasowym, jest również cennym źródłem mikroelementów i witamin z grupy B oraz witaminy E. Ponadto orzeszki gryczane wyróżniają się dużą ilością polifenoli, wśród nich flawonoidów i flawonów. Spożywanie pieczywa żytniego jest natomiast korzystne ze względu na wysoką zawartość w nim błonnika pokarmowego i kwasów fenolowych oraz charakterystyczny smak i aromat. Dlatego też wykorzystanie do wypieku pieczywa zarówno z mąki żytniej, jak i produktów przemiału gryki może pozwolić uzyskać produkt o wysokiej wartości smakowej i odżywczej. Cel badań. Celem badań była ocena wpływu dodatków gryczanych i procesu wypieku na wartość prozdrowotną mieszanek i pieczywa żytnio-gryczanego. Materiał i metody. Materiał badawczy stanowiła mąka żytnia typ 580 oraz mąka, śruta i otręby gryczane, które otrzymano w wyniku przemiału kaszy gryczanej nieprażonej. Produkty gryczane dodawano do mąki żytniej w ilości 20 i 35%. Próbę kontrolną stanowiła mąka żytnia typ 580. W mieszankach żytnio-gryczanych i wypieczonym z nich pieczywie oznaczono zawartość wybranych flawonoidów metodą HPLC, polifenoli ogółem metodą Folina-Ciocalteu, oraz oznaczono aktywność przeciwutleniającą z wykorzystaniem rodników 1,1difenyl-2-pikrylohydrazylowych (DPPH). Wyniki. Wykazano, że otręby gryczane były znacznie bogatsze w polifenole ogółem, rutynę, kwercetynę, orientynę i izoorientynę niż inne produkty gryczane i mąka żytnia. Po obróbce cieplnej, jaką jest wypiek, chleb zawierał więcej polifenoli ogółem i kwercetyny oraz miał większą siłę gaszenia rodników DPPH niż mieszanki, z których go wypieczono. Proces wypieku niekorzystnie wpływał na ilość rutyny, orientyny i izoorientyny. Wnioski. Zastosowanie otrąb gryczanych, jako zamiennika mąki żytniej w pieczywie znacznie zwiększa jego walory żywieniowe. Proces wypieku wpływa niejednakowo na zawartość poszczególnych grup związków przeciwutleniających.

Źródło:

Roczniki Państwowego Zakładu Higieny; 2015, 66, 2
0035-7715

Pojawia się w:

Roczniki Państwowego Zakładu Higieny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:

Effect of Maltodextrin on Drying Rate of Avocado (Persea Americana Mill.) Pulp by Refractance Window Technique, and on Color and Functional Properties of Powder

Autorzy:

Nguyen, Thi-Van-Linh
Nguyen, Thi-Thuy-Dung
Huynh, Quoc-Trung
Nguyen, Phuoc-Bao-Duy

Powiązania:

https://bibliotekanauki.pl/articles/16538546.pdf

Data publikacji:

2023-06-01

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

antioxidant activity
chlorophyll
drying curve
total phenolics
color parameters

Opis:

This study investigated the effects of various maltodextrin contents (0, 6, 7.5, 9, and 10.5 g/100 g of pulp) on the drying rate and powder quality of avocado pulp dried by refractance window technique. Increasing the maltodextrin addition level significantly decreased the drying rate and prolonged the drying time. The maltodextrin considerably affected the drying rate of pulp when its moisture content was higher than 1.0 g/g dry weight. A significant improvement was found in the retention of total contents of phenolics and chlorophylls, antioxidant capacity, and color in avocado powder obtained from pulp with maltodextrin. The addition of 9 g maltodextrin/100 g of pulp allowed to retain 85.60% TPC, 78.78% total chlorophyll content, 83.48% DPPH radical scavenging activity, and 78.89% ferric reducing antioxidant power. However, maltodextrin in the amount of 10.5 g/100 g of pulp had a negative impact on moisture removal and deteriorated the quality of the dried avocado. These findings may have practical application for the production of dried avocado and other fruits.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2023, 73, 2; 187-195
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

Phytochemical composition and antioxidant activity of leaves extracts of Coleus forskohlii L. collected from Al-Leith Area, Saudi Arabia

Autorzy:

Sameeh, Manal Y.

Powiązania:

https://bibliotekanauki.pl/articles/27315665.pdf

Data publikacji:

2023

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Coleus forskohlii L.
Leaves Extracts
Phytochemical composition
Antioxidant activity

Opis:

Background: wild Coleus forskohlii L. is a well-known traditional medicine for the treatment of many diseases because of its high forskolin content and several diterpenes. Objective: this study aimed phytochemical screening, finding of total phenolic content (TPC), total flavonoid content (TFC) and antioxidation activity of Coleus forskohlii L. leavse extracts in Al-Leith area, Saudi Arabia. Materials and Methods: dry leaves of wild C. forskohlii L. were used. Four solvents from diverse polarity groups were tested on these leaves, which are ethanol, ethyl acetate, chloroform, and hexane. Moreover, obtained extracts were used in phytochemical analyzing, finding of total phenols, and antioxidation activity. Results: showed the presence of phenols, flavonoids, tannins, alkaloids, Proteins, carbohydrates, saponins, and glycosides in Coleus forskohlii L. leaves. The highest value of total phenolic content (TPC) was significantly (P < 0.001) in ethanol extract (280.5±2.33 mg GAE/gm. Also, the highest value of total flavonoid content (TFC) was in ethanol extract (141.4±1.30 mg QE /g). The antioxidation activity was significantly (P < 0.001) higher in ethanol extract (78.55±2.23%), followed by ethyl acetate extract (60.18±1.21%), chloroform extract (36.11±2.54%), and lowest value in hexane extract (20.71±0.59%). The study clearly indicated that the leaves extract of C. forskohlli L. collected from Al-Leith region- Saudi Arabia has properties to be useful in pharmacological and biological industries.

Źródło:

Polish Journal of Chemical Technology; 2023, 25, 3; 56--62
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:

Synthesis, characterization of isoxazole derivatives and evaluation of their antibacterial, antioxidant and anticancer activity

Autorzy:

Vashisht, Ketan
Sethi, Pooja
Bansal, Anshul
Singh, Tejveer
Kumar, Raman
Singh Tuli, Hardeep
Saini, Shallu

Powiązania:

https://bibliotekanauki.pl/articles/40570865.pdf

Data publikacji:

2024-06-30

Wydawca:

Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego

Tematy:

antibacterial
antioxidant activity and anticancer potential
isoxazole
pathogenic bacterial

Opis:

Introduction and aim. The synthesis of heterocyclic compounds containing oxygen and nitrogen is profoundly intriguing due to their mechanistic implications in both research and development within organic chemistry and drug discovery. The primary aim of this study is to fabricate a range of pharmacologically active drugs containing the isoxazole moiety. Material and methods. The synthesis of new derivatives of isoxazole was achieved through a one-pot condensation reaction of 2-[(Substituted phenyl)hydrazono]malononitrile (1) and 3-[(Substituted phenyl)azo]-2,4-Pentanedione (2) with sodium acetate and hydroxylamine hydrochloride (1:1) in ethanol. All the compounds were screened for their in vitro antibacterial activity, in vitro antioxidant and anticancer activity. The synthesized compounds underwent characterization through FTIR, 1H NMR, and 13C NMR analyses, supported by mass spectral data and elemental analysis. Results. A set of novel isoxazole derivatives was synthesized with a favorable yield. Among compounds 1d, 1e, 2c, 2d, and 2e exhibited notable antioxidant activities. Compounds 1a, 1b, and 1c demonstrated significant anticancer potential against prostate cancer [PC3] cell lines compared to normal HEK cell lines, while 2a displayed the highest inhibitory zone against Escherichia coli. Conclusion. Novel compounds with multifaceted biological activities have been successfully designed, and a synthetic route to create isoxazole derivatives has been devised and verified.

Źródło:

European Journal of Clinical and Experimental Medicine; 2024, 22, 2; 376-387
2544-2406
2544-1361

Pojawia się w:

European Journal of Clinical and Experimental Medicine

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:

Antioxidant, antimicrobial and neutrophil-modulating activities of herb extracts

Autorzy:

Denev, Petko
Kratchanova, Maria
Ciz, Milan
Lojek, Antonin
Vasicek, Ondrej
Blazheva, Denitsa
Nedelcheva, Plamena
Vojtek, Libor
Hyrsl, Pavel

Powiązania:

https://bibliotekanauki.pl/articles/1039303.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

herbs
polyphenols
antioxidant activity
antimicrobial activity
phagocytes
reactive oxygen species

Opis:

The present study provides a comprehensive data on the antioxidant, antimicrobial and neutrophil-modulating activities of extracts from six medicinal plants - blackberry (Rubus fruticosus) leaves, chokeberry (Aronia melanocarpa) leaves, hawthorn (Crataegus monogyna) leaves, lady's mantle (Alchemilla glabra) aerial parts, meadowsweet (Filipendula ulmaria) aerial parts and raspberry (Rubus idaeus) leaves. In order to analyze the antioxidant activity of the herbs, several methods (ORAC, TRAP, HORAC and inhibition of lipid peroxidation) were used. Blackberry leaves and meadowsweet extracts revealed the highest antioxidant activities via all methods. All extracts studied blocked almost completely the opsonized zymosan particle-activated ROS production by neutrophils from human whole blood. On the other hand, the effect of extracts on phorbol myristate acetate-activated ROS production was much milder and even nonsignificant in the case of chokeberry leaves. This latter result suggests that extracts (apart from their antioxidative activity) interfere with the signaling cascade of phagocyte activation upstream of the protein kinase C activation. The antimicrobial activity of the investigated extracts against 11 human pathogens was investigated using three different methods. Meadowsweet and blackberry leaves extracts had the highest antimicrobial effect and the lowest minimal inhibiting concentrations (MICs) against the microorganisms tested.

Źródło:

Acta Biochimica Polonica; 2014, 61, 2; 359-367
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:

Chemical Composition, Cytotoxic and Antioxidant Activities of Celosia trigyna L. Grown in Saudi Arabia

Autorzy:

El-Desouky, Samy
Abdelgawad, Ahmed
El-Hagrassi, Ali
Hawas, Usama
Kim, Young-Kyoon

Powiązania:

https://bibliotekanauki.pl/articles/895232.pdf

Data publikacji:

2019-08-30

Wydawca:

Polskie Towarzystwo Farmaceutyczne

Tematy:

GC-MS
antioxidant activity
cytotoxic activity
Celosia trigyna
flavonoid-glycosides

Opis:

The methanol extract of the aerial parts of Celosia trigyna (Amaranthaceae) was successively fractionated using n-hexane, dichloromethane, ethyl acetate and n-butanol. The cytotoxic activity of the obtained fractions was investigated using sulphorhodamine-B (SRB) assay against three carcinoma cell lines; breast adenocarcinoma (MCF-7), colorectal carcinoma (HCT-116) and hepatocellular carcinoma cells (HepG2). The dichloromethane fraction showed significant in vitro cytotoxic activities against the human cancer cell lines HCT-116 and HEP-G2 with IC50 values of 10.9 and 11.2 µg/mL, respectively, while all fractions revealed weak antioxidant activity using DPPH free radical scavenging method. The GC-MS analysis of the most cytotoxic dichloromethane fraction has resulted in the identification of 12 compounds. The main constituents were tetrahydroisoquinoline derivative (31.44%), 2,3-dimethylheptadecane (16.71%) and 3-octadecanone (15.56%). Moreover, the phytochemical study of the dichloromethane and n-butanol fractions led to the isolation and identification of five known compounds identified as β-amyrin acetate (1), acacetin 8-C-α-rhamnosyl-(1→2)-β-glucopyranoside (2), apigenin 8-C-α-rhamnosyl-(1→2)-β-glucopyranoside (3), quercetin 3-O-α-rhamnosyl-(1→6)-β-glucopyranoside (4) and 3-hydroxyglutaric acid (5).

Źródło:

Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 4; 691-699
0001-6837
2353-5288

Pojawia się w:

Acta Poloniae Pharmaceutica - Drug Research

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:

Antidepressant activity of ethanolic extract of oleo gum resins of Ferula asafoetida Linn

Autorzy:

Kumar, T. Bharath
Reddy, V. Jayasankar
Rushendran, R.
Mamatha, T.
Roja, J.
Roopavani, T.

Powiązania:

https://bibliotekanauki.pl/articles/972623.pdf

Data publikacji:

2017

Wydawca:

Instytut Medycyny Wsi

Tematy:

antidepressant activity
models of depression
brain monoamines
antioxidant activity
Ferula asafoetida

Opis:

Objective. The study was undertaken to evaluate the antidepressant activity of ethanolic extract of Ferula asafoetida oleo gum resins. Materials and Methods. Five groups of rats (180–200g) and mice (20–30g) of both genders, each group comprising six animals, were used (i.e., normal, positive control, standard, FAEE 200mg/kg, and FAEE 400mg/kg treated groups). Forced swimming test (FST), Tail suspension test (TST), Potentiation of Norepinephrine-Induced Toxicity (PNEIT), Haloperidol- Induced Catalepsy (HIC), and Reserpine-Induced Hypothermia (RIH), were used as the validate models of depression in rodents. The study was confirmed by brain monoamines estimation (i.e. Dopamine, Norepinephrine and 5-HT), MAO levels and invivo antioxidant studies (CAT and SOD). Results. FAEE treated animals showed a significant and dose dependent effect on a decrease in immobility time in FST, TST, and decrease in catalepsy time in HIC. FAEE and imipramine (15mg/kg) showed a significant increase in body temperature in RIH, and also showed a potent lethality in PNEIT. FAEE treated animals showed a significant increase in the levels of brain monoamines, in vivo antioxidants, and a significant decrease in MAO levels. Conclusion. Results of present study indicate that FAEE has potent antidepressant-like activity, and this effect may be due to the anti-oxidant property of Ferulic acid and umbelliferone, or may be due to neuroprotective activity of other major phytoconstituents, e.g. flavonoids, phenolic acids and polysulfide compounds. To identify the particular compound responsible for the antidepressant-like activity required further molecular level studies.

Źródło:

Journal of Pre-Clinical and Clinical Research; 2017, 11, 1; 50-60
1898-2395

Pojawia się w:

Journal of Pre-Clinical and Clinical Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Antibacterial, antifungal, anti-oxidant, anti-inflammatory and anti-hypertensive activities of N-chloropyrazinamide

Autorzy:

Vaijayanthi, S. P.
Mathiyalagan, N.

Powiązania:

https://bibliotekanauki.pl/articles/412474.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

antibacterial activity
antifungal activity
antioxidant activity
anti-inflammatory
anti-hypertensive activity
N-chloropyrazinamide

Opis:

N-chloropyrazinamide was prepared by the chlorination of pyrazinamide using trichloroisocyanuric acid. The experimental results ascertained that the tested N-chloropyrazinamide showed good antimicrobial activities when compared to standard drug. It was found that N-chloropyrazinamide at different concentrations exhibited significant dose dependent anti-oxidant, anti-inflammatory and anti-hypertensive activity.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2014, 7; 1-8
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Effect of Infrared Drying on the Drying Kinetics and the Quality of Mango (Mangifera indica) Powder

Autorzy:

Nguyen, Phuoc-Bao-Duy
Nguyen, Thi-Van-Linh
Nguyen, Thi-Thuy-Dung

Powiązania:

https://bibliotekanauki.pl/articles/28408451.pdf

Data publikacji:

2024-03-01

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

antioxidant activity
fruit powder
phenolics
pulp drying
Weibull model

Opis:

Mango powder is a nutrient-dense substance that can be used directly or as a supplement in food items. However, due to the high sugar content, the removal of moisture from mango was difficult. This study investigated an infrared drying technique for removing moisture from mango pulp to produce powder products. The experiment was designed in a three-factor full factorial design with the following variables: drying temperature (70, 75, and 80°C), maltodextrin content (0, 6, and 9 g/100 g pulp), and total soluble solid content (11 and 16°Brix). The findings indicated that the Weibull model was the most appropriate for describing the moisture removal of mango pulp during infrared drying. Higher temperature and maltodextrin content, along with reduced total soluble solid content, resulted in improved quality of the mango powder. Furthermore, the optimal drying conditions for mango powder were found as 11°Brix, 80°C, and 9% maltodextrin content, which could ensure the highest retention of total phenolics (59.874%), retention of reducing sugars (71.044%), total acidity (10.141%), and retention of DPPH radical scavenging activity (65.051%). To fully benefit from the rewards of infrared drying, it is essential to establish suitable pretreatment conditions or use additives to preserve component quality.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2024, 74, 1; 69-81
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Triterpenoid α-amyrin stimulates proliferation of human keratinocytes but does not protect them against UVB damage

Autorzy:

Biskup, Edyta
Gołębiowski, Marek
Gniadecki, Robert
Stepnowski, Piotr
Łojkowska, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/1039744.pdf

Data publikacji:

2012

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

UVB
BrdU incorporation
Rhaponticum carthamoides
α-amyrin
antioxidant activity

Opis:

Rhaponticum carthamoides plants ("maral root") are widely used in Siberian folk medicine. The present study reports for the first time the presence of pentacyclic terpenoid, α-amyrin, in methanol extract from leaves of this plant. α-Amyrin induced proliferation of human keratinocytes (HaCaT) by about 18% while other extract components were ineffective. A panel of biochemical and cell-based assays testing the antioxidative and cytoprotective activites of α-amyrin indicated no antioxidative activity of this compound. α-Amyrin did not protect HaCaT cells against the damage caused by UVB radiation.

Źródło:

Acta Biochimica Polonica; 2012, 59, 2; 255-260
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Fruit maturity phenolic content and antioxidant activity of Eugenia jambolana Lam. fruit

Autorzy:

Balamurugan, S.

Powiązania:

https://bibliotekanauki.pl/articles/11329.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

fruit maturity
phenolics content
antioxidant activity
Eugenia jambolana
fruit

Opis:

Fruits of Eugenia jambolana were analysed for total phenolics and antioxidant activity of three successive development stages viz. 1. Mature green 2. Half - ripened and 3. Fully ripened. The total anthocyanin concentrations were higher in fully ripened stage, the total phenolic content was maximum achieved in mature green stage (354 mg L-1). Antioxidant activity also strongly depended on ripening stages, showing completely opposite compared to that of total phenolics. Since total phenolics and antioxidant activity performed nearly “Object and its reflection in the mirror” trend.

Źródło:

International Letters of Natural Sciences; 2014, 08, 1
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Effect of flavonoids content on antioxidant activity of commercial cosmetic plant extracts
Wpływ zawartości flawonoidów na aktywność przeciwutleniającą handlowych kosmetycznych ekstraktów roślinnych

Autorzy:

Malinowska, P.

Powiązania:

https://bibliotekanauki.pl/articles/71500.pdf

Data publikacji:

2013

Wydawca:

Instytut Włókien Naturalnych i Roślin Zielarskich

Tematy:

flavonoids content
antioxidant activity
commercial product
cosmetic
plant extract

Opis:

The aim of this work was to evaluate the antioxidant capacity and flavonoids content in 10 commercial cosmetic plant extracts used in cosmetics industry. Antioxidant activity of plant extracts were measured using two methods: FRAP (Ferric Reducing Antioxidant Power) and TEAC (Trolox Equivalent Antioxidant Capacity). The relationship between flavonoids content and antioxidant capacity of plant extracts were checked. As a result of this research it was found that FRAP and TEAC values of plant extracts significantly depend on the flavonoids content. The highest antioxidant activity, both in FRAP and TEAC assays, was observed for arnica flowers, hawthorn flowers and lungwort herb extracts. These extracts can be used as source of natural antioxidants for the prolongation of the oxidative stability of cosmetic products. Additionally, they can replace synthetic antioxidants.
Celem badań była ocena aktywności przeciwutleniającej i zawartości flawonoidów w 10 handlowych kosmetycznych ekstraktach roślinnych stosowanych w przemyśle kosmetycznym. Ich aktywność przeciwutleniającą zmierzono przy użyciu dwóch metod: Ferric Reducing Antioxidant Power (FRAP) i Trolox Equivalent Antioxidant Capacity (TEAC). Ponadto sprawdzono zależność między zawartością flawonoidów w ekstraktach roślinnych a ich aktywnością przeciwutleniającą. Stwierdzono, iż wartości wskaźników FRAP i TEAC wyznaczone dla ekstraktów roślinnych w sposób istotny zależą od zawartych w nich flawonoidów. Najwyższą aktywność przeciwutleniającą, zarówno w teście FRAP, jak i TEAC, zaobserwowano dla ekstraktu z arniki górskiej, głogu jednoszyjkowego i miodunki plamistej. Ekstrakty te mogą być użyte jako źródła naturalnych przeciwutleniaczy dla przedłużenia stabilności oksydacyjnej produktów kosmetycznych i ponadto mogą zastępować syntetyczne przeciwutleniacze.

Źródło:

Herba Polonica; 2013, 59, 3
0018-0599

Pojawia się w:

Herba Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Effect of extraction method on the antioxidative activity of ground elder (Aegopodium podagraria L.)

Autorzy:

Wróblewska, Agnieszka
Janda, Katarzyna
Makuch, Edyta
Walasek, Marika
Miądlicki, Piotr
Jakubczyk, Karolina

Powiązania:

https://bibliotekanauki.pl/articles/779414.pdf

Data publikacji:

2019

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Ground elder
methods of extractions
antioxidant activity
DPPH radical

Opis:

In this work the studies on the antioxidative properties of extracts from various morphotic parts of the ground elder (leaves, rhizomes, seeds and flowers) were presented. Moreover, the effect of different extraction methods (ultrasonic assisted extractions, extraction in a Soxhlet apparatus, extraction at the boiling point of the solvent used), solvent and its amount, and extraction time on the antioxidative properties of the obtained extracts were tested. The studies showed that all parts of ground elder can show radical scavenging activity, and it depends mainly on the method of extraction and extraction time. But the most beneficial is ultrasonic assisted extraction which used lower amount of solvent (ethanol). In case of all parts of the ground elder (leaves, rhizomes, seeds and flowers) it allows to obtain very high values of the antioxidant capacity (above 90%) for very short extraction time amounted to 20–40 minutes.

Źródło:

Polish Journal of Chemical Technology; 2019, 21, 3; 13-18
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Hepatoprotective and antioxidant activity of Lannea coromandelica Linn. on thioacetamide induced hepatotoxicity in rats

Autorzy:

Srinivasa Rao, V.
Wilkin Einstein, J.
Das, K.

Powiązania:

https://bibliotekanauki.pl/articles/11218.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

hepatoprotective activity
antioxidant activity
biochemical parameter
Lannea coromandelica
thioacetamide
hepatotoxicity
rat

Opis:

Hepatoprotective and antioxidant activity of Lannea coromandelica bark extract (LCBE) was investigated on thioacetamide induced hepatotoxicity in rats. Hepatotoxicity was induced by thioacetamide (TAA) administration (100 mg/kg. s.c). LCBE at different doses (400 and 200 mg/kg) were administered orally to male wistar rats. Thioacetamide caused elevation of serum concentration of AST, ALT, ALP, serum bilirubin and also reduced serum concentration of total protein, albumin, sodium, potassium in animals as compared to control (p < 0.05) but LCBE treated rats showed maximum reduction of AST [(138±5.1) IU/L], ALT [(71 ±2.7) IU/L], ALP [(140 ±1.9) IU/L] with the high dose (400 mg/kg bw) of combined aqueous and alcoholic bark extract. Whereas, serum bilurubin, cholesterol, sugar and LDH content were varied with the treatments but showed higher with the only ethanolic extract at dose of 400 mg/kg. The IC50 value was observed as (83.28 ±2.12) μg/mL, for DPPH radical scavenging activity. Result concluded that ethanolic extract and combined aqueous and alcoholic bark extract of L. coromandelica showed a potential hepatoprotective and antioxidant activities might be due to the presence of phenolic groups, terpenoids and alkaloids.

Źródło:

International Letters of Natural Sciences; 2014, 03
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Effect of the Addition of Apple Pomace and Erythritol on the Antioxidant Capacity and Antidiabetic Properties of Shortbread Cookies

Autorzy:

Raczkowska, Ewa
Wojdyło, Aneta
Nowicka, Paulina

Powiązania:

https://bibliotekanauki.pl/articles/31341114.pdf

Data publikacji:

2024-05-17

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

apple pomace
erythritol
shortbread cookies
LC-MS
antidiabetic activity
antioxidant activity

Opis:

Apple processing into juice generates vast amounts of a by-product, namely fruit pomace, which poses a serious problem for the processing industry. At the same time, fruit pomace features a high health potential. The aim of the present study was to develop recipes of 8 variants of cookies with wheat flour substituted by apple pomace (0, 10, 30 and 50% of flour weight), sweetened with sucrose and erythritol. The cookies were analyzed for their nutritional value; antioxidant capacity (ABTS•+ scavenging activity and oxygen radical absorption capacity – ORAC); the ability to inhibit α-amylase, α-glucosidase and pancreatic lipase; and consumer acceptability. In total, 13 phenolic compounds were identified in the cookies with pomace. Cookies with 50% addition of apple pomace had an approximately 8-fold higher content of dietary fibre than traditional products (without the apple pomace) and simultaneously reduced energy value (by 32.6 and 40.5 kcal/100 g of cookies sweetened with sucrose and erythritol, respectively). The antioxidant capacity of cookies was 0.032–0.316 mmol TE/100 g in the ABTS assay and 1.153–2.070 mmol TE/100 g when ORAC was determined. The IC₅₀ enabling α-amylase and α-glucosidase inhibition ranged from 138.1 to 221.8 mg/mL and from 976.4 to 1374.9 mg/mL, respectively. The anti-lipase activity of cookies with the addition of 50% apple pomace and erythritol was the highest (IC₅₀ of 7.3 mg/mL). Both antioxidant capacity and antidiabetic potential increased significantly with the increasing proportion of pomace in cookies. Replacing sucrose with erythritol favorably influenced the consumer assessment. The study results show that the proposed products can be a perfect alternative to traditional sweet snack products, especially for consumers with diet-related diseases. The feasibility of using waste raw materials, which are a challenge to the food industry, has been proven as well.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2024, 74, 2; 147-161
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Antioxidative Properties in Grapes of Selected Cultivars Grown in Poland
Antyoksydacyjne właściwości winogron wybranych odmian uprawianych w Polsce

Autorzy:

Leja, M.
Kamińska, I.
Kulczak, K.

Powiązania:

https://bibliotekanauki.pl/articles/388913.pdf

Data publikacji:

2011

Wydawca:

Towarzystwo Chemii i Inżynierii Ekologicznej

Tematy:

winogrona
aktywnooeć antyoksydacyjna
związki fenolowe
grapes
antioxidant activity
phenolic compounds

Opis:

Ten grape-vine cultivars (5 white and 5 red skinned) were cultivated in south-east region of Poland. Samples were frozen and for analyzes extracts in 80 % MeOH were prepared. Contains of total phenols, phenylpropanoids, flavonols and anthocyanins were measured, using UV/VIS method. Additionally, radical scavenging activity with DPPH was determind. In red skinned fruits content of phenolic compounds was higher than in white skinned ones. Cultivars showed great diversity: the highest level of phenolics was observed in ‘Heridan’ and the lowest in ‘Bianca’ cultivars. Radical scavenging activity (RSA) was also very high in red grapes, especially in skin (over 90 % of free radical was neutralized). Antioxidant activity of white fruit cultivars was ranged between 9 and 50 % (‘Bianca’ and skin of ‘Jutrzenka’ cultivars, respectively). In analyzed tissue correlation (r = 0.70) between total phenolics and RSA was found.
Dziesięć wybranych odmian winogron (5 o białej i 5 o czerwonej skórce) uprawiano w południowo- wschodnim regionie Polski. Z zamrożonych próbek owoców przygotowywano ekstrakty w 80 % metanolu, w których oznaczano sumę związków fenolowych, fenylopropanoidy, flawonole i antocyjany stosując metodę UV/VIS. Ponadto oznaczono zdolnooeć neutralizowania wolnego rodnika za pomocą metody z DPPH. W owocach o czerwonej skórce zawartooeć składników fenolowych była większa niż w owocach o skórce białej. Stwierdzono znaczne zróżnicowanie odmianowe: najwyższy poziom fenoli obserwowano w odmianie Heridan, najniższy w odmianie Bianca. Aktywnooeć antyrodnikowa (RSA) była również bardzo duża w czerwonych winogronach, szczególnie w skórce (ponad 90 % neutralizacji wolnego rodnika). W przypadku odmian o skórce białej aktywnooeć antyoksydacyjna była zawarta w przedziale 9–50 % (Bianca i skórka odmiany Jutrzenka). W analizowanych tkankach stwierdzono dodatnia korelację (r = 0.70) pomiędzy sumą związków fenolowych a RSA.

Źródło:

Ecological Chemistry and Engineering. A; 2011, 18, 1; 59-65
1898-6188
2084-4530

Pojawia się w:

Ecological Chemistry and Engineering. A

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

L-tryptophan and its deriviates in edible mushroom species.

Autorzy:

MUSZYŃSKA, Bożena
KOMENDACKI, Paweł
KAŁA, Katarzyna
OPOKA, Włodzimierz
ROJOWSKI, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/1033762.pdf

Data publikacji:

2014

Wydawca:

Zakład Opieki Zdrowotnej Ośrodek Umea Shinoda-Kuracejo

Tematy:

L–tryptophan
antidepressant agent
antioxidant activity
edible mushrooms
indole compounds

Opis:

Mushrooms are able to accumulate both primary and secondary metabolites. Medicinal and antioxidant properties of mushrooms are an excellent combination of their nutrition value. Recent studies have demonstrated that edible mushroom species contain non–hallucinogenic indole compounds and their derivatives. The indole skeleton is the basis of the substances serving important functions in the human body, such as serotonin and melatonin. These compounds fulfill the role of neurotransmitters or their precursors, exhibit antioxidant, anticancer, anti–aging actions, regulate the diurnal cycle in humans and participate in blood coagulation. These compounds and their derivatives are also anti– inflammatory and analgesic therapeutics.

Źródło:

Medicina Internacia Revuo; 2014, 26, 103; 82-88
0465-5435

Pojawia się w:

Medicina Internacia Revuo

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Studies on the antioxidant properties of extracts from the roots and shoots of two Scutellaria species in human blood plasma

Autorzy:

Grzegorczyk-Karolak, Izabela
Wysokińska, Halina
Olas, Beata

Powiązania:

https://bibliotekanauki.pl/articles/1039100.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

antioxidant activity
flavonoid content
oxidative stress
Scutellaria alpina
Scutellaria altissima

Opis:

We determined the in vitro antioxidant activity of methanolic extracts from the shoots and roots of Scutellaria species (S. altissima and S. alpina) against the action of strong oxidants: hydrogen peroxide (H2O2) and H2O2+Fe2+ (donor of hydroxyl radicals) on plasma proteins and lipids. Lipid peroxidation in human plasma was measured by the level of thiobarbituric acid reactive species (TBARS). Protein oxidation was measured by quantitation of thiol group. We observed that the extracts (5-50 µg ml-1) containing phenolic compounds from both Scutellaria species distinctly reduced oxidation of lipids and proteins in human plasma treated with H2O2. These results also indicated that the extracts have a protective effect against oxidative damage to the human plasma lipids and proteins by induced hydroxyl radical. The main components of the plant materials analysed were flavonoids, present as aglycones (luteolin) or glycosides (cynaroside, baicalin, wogonoside). In all of the extracts, the phenylethanoid verbascoside was also found. The properties of the tested plant extracts were also compared with the action of a well characterised commercial antioxidative polyphenolic extract from the berries of Aronia melanocarpa (Aronox®). The comparative studies indicated that the analysed plant extracts were comparable to or even more effective in reducing the oxidation processes than the A. melanocarpa extract. The present study suggests that natural extracts from S. altissima and S. alpina have antioxidant activities and, therefore, may be beneficial in the prevention of diseases related to oxidant stress, such as cancer, cardiovascular, and inflammatory diseases.

Źródło:

Acta Biochimica Polonica; 2015, 62, 2; 253-258
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Oznaczanie aktywności przeciwutleniającej metodami in-vitro
Determination of antioxidant activity with in-vitro methods

Autorzy:

Malinowski, Jacek
Drzeżdżon, Joanna
Chmurzyński, Lech
Jacewicz, Dagmara

Powiązania:

https://bibliotekanauki.pl/articles/972307.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Chemiczne

Tematy:

aktywność przeciwutleniająca
metoda in vitro
antioxidant activity
in vitro methods

Opis:

In - vitro methods of determination of the antioxidant activity of complex compounds are very interesting and not fully investigated areas of knowledge from the borderline of chemistry and biology. Methods used for determination of the activity of antioxidant complex compounds are modified due to the conditions of the experiments in which they should be carried out, e.g. reactions at physiological pH. Civilization diseases, stress related to the fast pace of life and increasing requirements of our lives cause the formation of free radicals in our body, i.e. particles characterized by a high reactivity. The methods of determination of the antioxidant activity of complexes discussed in this work apply tests carried out in laboratory conditions - in - vitro.

Źródło:

Wiadomości Chemiczne; 2019, 73, 9-10; 523-542
0043-5104
2300-0295

Pojawia się w:

Wiadomości Chemiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Optimization of acid assisted extraction process of foxtail millet polysaccharides and its antioxidant activity

Autorzy:

Shi, Y.
Zhu, A.
Shen, L.

Powiązania:

https://bibliotekanauki.pl/articles/2082902.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

foxtail millet
polysaccharides
acid extraction
response surface methodology
antioxidant activity

Opis:

Experiments concerning hydrochloric acid assisted extraction of polysaccharides from foxtail millet were carried out. Various combinations of extraction conditions of hydrochloric acid concentration, liquid-solid ratio, extraction time and extraction temperature were investigated using the Response Surface Methodology at three levels and four variables of Box-Behnken designs to obtain the maximum yield of polysaccharides. The experimental data were fitted to a quadratic equation using multiple regression analysis and analysed. The antioxidant activity of the obtained polysaccharides was also investigated in vitro. The optimal conditions were an acid concentration of 2.4 mol L-1, a liquid- solid ratio of 19.3:1 mL g-1, an extraction time of 1.2 h, and an extraction temperature 80.6°C. Under these conditions, the experimental yield was 52.13 mg g-1, which was in close agreement with the value of 52.37 mg g-1 predicted by the model. The mathematical model had a high correlation with experimental data (p<0.05). The polysaccharides of foxtail millet display a high radical scavenging capacity against superoxide and hydroxyl radicals.

Źródło:

International Agrophysics; 2020, 34, 2; 141-149
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Influence of various drying methods on physicochemical characteristics, antioxidant activity and bioactive compounds in Centella asiatica L. leaves: a comparative study

Autorzy:

Mohapatra, Priyanka
Ray, Asit
Jena, Sudipta
Nayak, Sanghamitra
Mohanty, Sujata

Powiązania:

https://bibliotekanauki.pl/articles/16648130.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

antioxidant activity
bioactive compounds
Centella asiatica
color characteristics
drying methods

Opis:

This comparative study aimed to evaluate the effects of different drying methods such as solar drying, shade drying (SHD), freeze drying (FD), oven drying, and microwave drying on the physicochemical properties, bioactive components, and antioxidant activity of Centella asiatica. The results showed that out of all the treated samples, FD-treated samples showed the lowest moisture content (2.4%), the lowest water activity (0.24%), and the highest rehydration ratio (5.51%). For samples treated using different drying methods, significant differences in Commission on Illumination – LAB (L *, a *, and b *) values and total color difference (E) were observed. FD-treated samples showed the minimum color change (E) and highest lightness (L*). Additionally, upon Fourier transform infrared spectral analysis, no major changes in the functional groups were observed between C. asiatica leaves processed using different drying methods. FD-treated samples showed the highest antioxidant activity followed by SHD-treated samples, as measured by 2,2-diphenyl-1-picrylhydrazyl and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid radical scavenging assays. The phenolic (chlorogenic acid, rutin, kaempferol, and quercetin) and triterpene saponin (madecassoside, asiaticoside, madecassic acid, and asiatic acid) contents of the dried samples of C. asiatica were measured using high-performance liquid chromatography, which showed that the FD method allowed for the highest retention of phenolic and triterpene saponins among the tested drying techniques. The physicochemical characteristics, antioxidant potential, and bioactive retention of the samples that underwent FD treatment were superior to those of other methods, and therefore, FD can be employed as the first-line drying technique for processing C. asiatica leaves.

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 235-247
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

In Vitro Characterization of Fluted Pumpkin Leaf Protein Hydrolysates and Ultrafiltration of Peptide Fractions: Antioxidant and Enzyme-Inhibitory Properties

Autorzy:

Famuwagun, Akinsola A.
Alashi, Adeola M.
Gbadamosi, Saka O.
Taiwo, Kehinde A.
Oyedele, Joseph D.
Adebooye, Odunayo C.
Aluko, Rotimi E.

Powiązania:

https://bibliotekanauki.pl/articles/1363312.pdf

Data publikacji:

2020

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

fluted pumpkin leaf
protein hydrolysates
membrane ultrafiltration
antioxidant activity
antidiabetic activity
antihypertensive activity

Opis:

Hydrolysates were produced using Alcalase (AH), chymotrypsin (CH), pepsin (PH), and trypsin (TH), and also fluted pumpkin leaf protein isolate (FLI) as a substrate. AH had the lowest degree of hydrolysis (16.37%) but exhibited overall superior antioxidant and enzyme inhibitory properties. Therefore, it was fractionated by membrane ultrafiltration to give <1, 1-3, 3-5, 5-10, and >10 kDa peptide fractions. Gel permeation chromatography showed that the molecular weight of the FLI was 19.77 kDa and that of the hydrolysates was below 7.5 kDa. The hydrolysate peptides had a high content of hydrophobic amino acids but low levels of sulfur-containing amino acids, when compared to protein of FLI. Peptide sequence analysis showed that the hydrolysates consisted of dipeptides, tripeptides, and tetrapeptides with molecular weights below 500 Da. The hydrolysates were also stronger inhibitors of linoleic acid oxidation, α-amylase, α-glucosidase, and angiotensin converting enzyme (ACE) than FLI. Among the fractions, the <1 and 1-3 kDa were the most effective free radical scavengers and metal chelators in addition to their strong inhibitory activities against α-amylase, α-glucosidase, and ACE. We conclude that the AH and low molecular weight peptide fraction (<3 kDa) could find applications in formulating foods with various bioactive properties.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2020, 70, 4; 429-443
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Ultrasound-Assisted Extractions for Improving the Recovery of Phenolics and Charantin from Bitter Melon and for Increasing the Antioxidant, Antidiabetic and Anti-Obesity Activities of Its Extracts

Autorzy:

Lee, Jin Ju
Yoon, Kyung Young

Powiązania:

https://bibliotekanauki.pl/articles/2051043.pdf

Data publikacji:

2022-06-02

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

bitter melon
ultrasound-assisted extraction
charantin
phenolic compounds
antioxidant activity
antidiabetic activity

Opis:

Bitter melon is rich in bioactive compounds and has a significant potential for commercial use as a functional food material. Its bioactive compound-rich extract was prepared using probe- or bath-type ultrasound-assisted extraction (UAE) with 60% (v/v) ethanol or distilled water. The composition and bioactivity of the extracts prepared using UAE was compared with those obtained by conventional extraction methods, such as autoclave extraction, ethanol extraction, and hot-water extraction. Although the yield of the autoclave extraction was the highest, the extracts obtained using UAE and aqueous ethanol exhibited a higher total phenolic content, antioxidant activity, antidiabetic activity (α-amylase and α-glucosidase inhibitory activities), and pancreatic lipase inhibitory activity than the conventional extracts. In particular, UAE with probe system and aqueous ethanol (UAE-P-E) was effective for extracting bioactive compounds, such as phenolics (total phenolic content of 18.73 mg GAE/g extract) and charantin (28.56 mg/g extract). Among all extracts, this prepared by UAE-P-E showed the highest DPPH radical scavenging activity (IC50 of 0.55 mg/mL), ferric reducing antioxidant power (250.5 μmol/g extract), and pancreatic lipase inhibitory activity (76.38% at a concentration of 3.0 mg/mL). These results suggest that bioactive compound-rich extracts from bitter melon obtained using UAE, especially UAE-P-E, are expected to have high application potential as a functional food material, and are also expected to be used as natural antioxidant, antidiabetic, and anti-obesity agents.

Źródło:

Polish Journal of Food and Nutrition Sciences; 2022, 72, 2; 141-150
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Effect of chemical modification of hydrodistillation on yield, composition and biological activity of Rosmarinus officinalis essential oil

Autorzy:

Dzięcioł, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/1849323.pdf

Data publikacji:

2021

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Rosmarinus officinalis essential oil
chemical modification of hydrodistillation
antioxidant activity
fungicidal activity

Opis:

Studies on the chemical modifications of Rosmarinus officinalis essential oil hydrodistillation process (HD) by using 5% citric acid (CA-HD) and 5% trisodium citrate (TSC-HD) ase water phase were performed. Composition of essential oils obtained in conventional and modified conditions was analyzed by gas chromatography with mass selective detector method (GC-MS) and compared. Antioxidant activity of all essential oils was determined spectrophotometrically by using DPPH radical scavenging method. It was found that applied modifications of hydrodistillation process enhanced yields and antioxidant activity and the best results were obtained using 5% citric acid as a modifier. Effect of this modification on fungicidal activity of essential oils against 8 various fungi strains (Alternaria alternata, Botrytis cinerea, Fusarium culmorum, Phythophtora cactorum, Rhizoctonia solani, Phythophtora infestans, Sclerotinia sclerotiorum and Ascosphaera apis) was also determined and in most cases enhanced activity was observed.

Źródło:

Polish Journal of Chemical Technology; 2021, 23, 3; 49-53
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

The use of fruit extracts for production of apple chips with enhanced antioxidant activity

Autorzy:

Tarko, T.
Duda-Chodak, A.
Semik-Szczurak, D.

Powiązania:

https://bibliotekanauki.pl/articles/874949.pdf

Data publikacji:

2017

Wydawca:

Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny

Tematy:

fruit extract
food production
apple chips
antioxidant activity
food supplementation
antioxidant compound
polyphenol

Opis:

Background. Style and pace of life make consumers more willing to reach for snack products. This group of processed food includes, among others, fruit chips. Due to the increasing incidence of diseases associated with the excessive exposure to free radicals foods enriched with antioxidant compounds, eg. polyphenols, can be introduced into the sale. Objective. The aim of the study was to use the fruit extracts for the production of apple chips with enhanced antioxidant activity. Material and methods. ‘Golden Delicious’ variety of apple fruit was used to produce chips. Apple chips were prepared by slicing, soaking in a sugar solution and pre-drying in a microwave oven. Chips were enriched with extracts prepared from fruits of chokeberry, five-flavor berry, Cornelian cherry, woodland hawthorn, goji berry, Japanese quince and cranberry microcarpa. For this purpose, pre-dried apple slices were soaked (5 min) in ethanolic extract of fruits and then dried to achieve a 5% moisture content. Chips were sensory evaluated and their antioxidant activity and total polyphenols content were determined. Results. All enriched apple chips were characterized by high antioxidant activity and a relatively high value of total polyphenols content. Chips soaked in extracts of five-flavor berry, cranberry and goji berry were characterized by the highest antioxidant potential. Samples obtained by using chokeberry and Cornelian cherry extracts showed the highest content of polyphenols. High sensory attractiveness of enriched chips was also showed. The chips with the addition of fiveflavor berry extract were exceptions. Their taste was not acceptable. Conclusions. Fruit extracts are a valuable material for chips enrichment. Taking into account all the analyzed differentiators, extracts of Japanese quince, goji berry and woodland hawthorn were found to be the best enriching additives. The chips soaked in extract of five-flavor berry, despite their high antioxidant activity, were disqualified due to very low score of sensory evaluation.
Wprowadzenie. Tempo oraz styl życia sprawiają, że konsumenci coraz chętniej spożywają produkty przekąskowe. Do wyrobów takich należą m.in. chipsy owocowe. Ze względu na rosnącą zachorowalność na choroby związane z nadmierną ekspozycją na wolne rodniki celowe wydaje się wprowadzanie do sprzedaży żywności wzbogaconej związkami przeciwutleniającymi, np. polifenolami. Cel. Celem badań było wykorzystanie ekstraktów owocowych do wytwarzania chipsów jabłkowych o podwyższonej aktywności przeciwutleniającej. Materiały i metody. Z jabłek odmiany Golden Delicious przygotowano chipsy jabłkowe poprzez pokrojenie na plastry, wysycenie w zalewie cukrowej i wstępne podsuszenie w piecu mikrofalowym. Chipsy jabłkowe wzbogacano ekstraktami etanolowymi z owoców aronii, pigwowca japońskiego, derenia jadalnego, żurawiny drobnoowocowej, głogu dwuszyjkowego, cytryńca chińskiego i kolcowoju chińskiego. W tym celu podsuszone plastry jabłek moczono (5 min) w ekstrakcie etanolowym z owoców. Następnie plastry dosuszono owiewowo do osiągnięcia 5% wilgotności. Uzyskane chipsy oceniano sensorycznie oraz oznaczano ich aktywność przeciwutleniającą i zawartość polifenoli ogółem. Wyniki. Wszystkie wzbogacone chipsy jabłkowe miały wyższą aktywność antyoksydacyjną i zawartość polifenoli ogółem niż próby kontrolne. Największym potencjałem antyoksydacyjnym charakteryzowały się chipsy z dodatkiem ekstraktu z cytryńca, żurawiny i goji. Najwyższą zawartością polifenoli odznaczały się chipsy z dodatkiem ekstraktu z aronii oraz derenia. Wykazano także wysoką atrakcyjność sensoryczną chipsów z dodatkami ekstraktów owocowych. Wyjątek stanowiły chipsy z dodatkiem cytryńca, których smak nie był akceptowany. Wnioski. Ekstrakty owocowe stanowią cenny surowiec wzbogacający chipsy owocowe. Wykazano, że najbardziej wartościowymi ekstraktami owocowymi wzbogacającymi chipsy jabłkowe, ze względu na wysoki potencjał antyoksydacyjny i wyniki oceny sensorycznej, były ekstrakty z owoców pigwowca, goi i głogu. Chipsy z dodatkiem ekstraktu z cytryńca, mimo wysokiej aktywności przeciwutleniającej, uzyskały niską ocenę sensoryczną.

Źródło:

Roczniki Państwowego Zakładu Higieny; 2017, 68, 2
0035-7715

Pojawia się w:

Roczniki Państwowego Zakładu Higieny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Pomiar całkowitej zdolności antyoksydacyjnej wybranych antyoksydantów i naparów metodą redukcji rodnika DPPH
Measurement of total antioxidant capacity of selected antioxidants and infusions using DPPH radical reduction

Autorzy:

Zych, I.
Krzepiłko, A.

Powiązania:

https://bibliotekanauki.pl/articles/106660.pdf

Data publikacji:

2010

Wydawca:

Towarzystwo Chemii i Inżynierii Ekologicznej

Tematy:

całkowita zdolność antyoksydacyjna
DPPH
antyoksydanty
herbata
kawa
total antioxidant activity
antioxidant
tea
coffee

Opis:

Antyoksydanty są obecne w wielu produktach żywnościowych. Są one niezmiernie ważne dla zdrowia i dobrego samopoczucia. Występują m.in. w ziołach, kawie, herbacie oraz innych produktach pochodzenia roślinnego. W prezentowanej pracy opisana została metoda DPPH badania zdolności antyoksydacyjnej. Stosując tę metodę, porównano właściwości antyoksydacyjne: kwasu galusowego, kwasu kawowego, kwasu askorbinowego, palmitynianu kwasu askorbinowego, glutationu zredukowanego, L-cysteiny, α-tokoferolu, troloksu oraz handlowych herbat ziołowych: melisy, rumianku, mięty, lipy, herbaty czarnej, herbaty zielonej oraz kawy mielonej i kawy rozpuszczalnej. Przedstawiona metoda może zostać wykorzystana jako ćwiczenie laboratoryjne dla studentów różnych kierunków studiów przyrodniczych. Celem takich ćwiczeń jest zapoznanie z metodyką pomiaru zdolności antyoksydacyjnych metodą DPPH, poznanie skuteczności antyoksydacyjnej wybranych związków w tej reakcji oraz oznaczenie całkowitej zdolności antyoksydacyjnej. Stwierdzono, że badane antyoksydanty i napary charakteryzują się zróżnicowanymi właściwościami antyoksydacyjnymi. Najlepsze właściwości antyoksydacyjne z przebadanych przeciwutleniaczy wykazuje kwas galusowy, natomiast spośród naparów - zielona herbata.
Antioxidants, which are present in many food products, are extremely important for human health. They occur in herbs, coffee, tea, and other products of vegetable origin. This paper describes the DPPH method for testing antioxidant capacity. The method was used to compare the antioxidant properties of gallic acid, caffeic acid, ascorbic acid, ascorbyl palmitate, reduced glutahione, L-cysteine, α-tocopherol, and trolox, as well as black tea, green tea, ground coffee, instant coffee, and commercial herbal teas: lemon balm, chamomile, peppermint, and lime blossom. The experiments described in the paper can be used as laboratory exercises for students in various fields of the natural sciences. The goal of such exercises is to learn how to measure antioxidant capacities using the DPPH method, to assess the antioxidant effectiveness of selected compounds in this reaction, and to determine the total antioxidant capacity of infusions. The antioxidants and infusions tested were shown to have varying antioxidant properties. Gallic acid exhibited the highest antioxidant capacity among the antioxidants tested, while green tea had the highest capacity among the infusions.

Źródło:

Chemistry-Didactics-Ecology-Metrology; 2010, 15, 1; 51-54
2084-4506

Pojawia się w:

Chemistry-Didactics-Ecology-Metrology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

The effects of nitric oxide on some antioxidant enzyme activities under salt stress in sunflower plants

Autorzy:

Yurekli, F.
Kirecci, O.A.
Celik, I.

Powiązania:

https://bibliotekanauki.pl/articles/12314257.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Tematy:

plant cultivation
common sunflower
Helianthus annuus
nitric oxide
antioxidant enzyme
antioxidant activity
enzyme activity
salt stress

Opis:

The effects of externally applied sodium nitroprusside on superoxide dismutase (SOD), glutathione peroxidase (GPx), ascorbate peroxidase (APX), and catalase (CAT) antioxidant enzyme activities, nitric oxide (NO) levels have been investigated in salt stress resistant and sensitive sunflower plants. NaCl treatments and SNP treatments simultaneously with salt application (NaCl+SNP) were performed. SOD, GPx, APX and CAT antioxidant enzyme activities and NO levels showed differences in leaf tissues treated with 100 µM SNP, different concentrations of NaCl, and NaCl+SNP. SOD, GPx and APX enzyme activities were generally increased in sensitive variety, but decreased in tolerant variety. However, while general increase in CAT enzyme activity was determined in tolerant type, a reduction was established in sensitive type. An increase was determined in both types in NO levels. It is evident from these results that administration of NO donor SNP can cope with reactive oxygen species in both varieties. This study indicates that negative effects of salt stress on different sun flower varieties can be recovered by nitric oxide.

Źródło:

Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 171-179
1644-0692

Pojawia się w:

Acta Scientiarum Polonorum. Hortorum Cultus

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Sprouting Exert Significant Influence on the Antioxidant Activity in Selected Pulses (Black Gram, Cowpea, Desi Chickpea and Yellow Mustard)

Autorzy:

Khyade, Vitthalrao B.
Jagtap, Sharad G.

Powiązania:

https://bibliotekanauki.pl/articles/1190118.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Ascorbic acid
β-carotene
DPPH
flavonoid
sprouts
total antioxidant activity

Opis:

Pulses are a vital source of plant-based proteins and amino acids for people around the globe and should be eaten as part of a healthy diet to address obesity, as well as to prevent and help manage chronic diseases such as diabetes, coronary conditions and cancer; they are also an important source of plant-based protein for animals. Pulses provide protein and fibre, as well as a significant source of vitamins and minerals, such as iron, zinc, folate, and magnesium, and consuming half a cup of beans or peas per day can enhance diet quality by increasing intakes of these nutrients. The present attempt deals with comparison antioxidant activities of various sprouts of selected pulses. The β-carotene, ascorbic acid, total antioxidant activity, total phenol and flavonoid content of black gram (Vigna mungo), cowpea (Vigna unguiculata), desi chickpea (Cicer arietinum), and yellow mustard (Brassica alba) seeds and their sprouts (48 h) were determined. The parameters selected reflect the antioxidant capacity with respect to the dietary antioxidants (β-carotene, ascorbic acid) which were noted to be highest in chickpea sprouts and black gram sprouts respectively. The highest antioxidant activity in terms of % DPPH inhibition (49.837 ± 0.61 % ) and flavonoid content ( 211.06 ± 8.17 mg/100g ) was observed in cowpea sprouts. The highest total phenol content was noted in yellow mustard sprouts (58.45 ±6.67 mg/100g). Inclusion of pulses in the diet is a healthy way to meet dietary recommendations and is associated with reduced risk of several chronic diseases including cancer. Long-term randomized controlled trials are needed to demonstrate the direct effects of pulses on the cancer like diseases.

Źródło:

World Scientific News; 2016, 35; 73-86
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

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