Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Phenolic" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 21
Tytuł:
Antioxidant activity of phenolic compounds of selected cold-pressed and refined plant oils
Aktywnosc antyoksydacyjna zwiazkow fenolowych wybranych olejow roslinnych tloczonych na zimno i rafinowanych
Autorzy:
Siger, A
Nogala-Kalucka, M.
Lampart-Szczapa, E.
Hoffman, A.
Powiązania:
https://bibliotekanauki.pl/articles/833891.pdf
Data publikacji:
2005
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
antioxidant activity
human health
phenolic compound
cold-pressed plant oil
free phenolic acid
plant oil
refined plant oil
Źródło:
Rośliny Oleiste - Oilseed Crops; 2005, 26, 2; 549-559
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Macro- and Micro-Nutrient Composition and Antioxidant Activity of Chickpea and Pea Accessions
Autorzy:
Costantini, Michela
Summo, Carmine
Centrone, Mariangela
Rybicka, Iga
D’Agostino, Mariagrazia
Annicchiarico, Paolo
Caponio, Francesco
Pavan, Stefano
Tamma, Grazia
Pasqualone, Antonella
Powiązania:
https://bibliotekanauki.pl/articles/1363264.pdf
Data publikacji:
2021-05-19
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
antioxidant activity
chickpeas
peas
phenolic extract
mineral composition
bioactive compounds
Opis:
Epidemiological studies reported an inverse association between the consumption of legumes and the incidence of age-related diseases. This trend could be attributed to the presence of antioxidant compounds, especially phenolic and flavonoid compounds. In this paper, five pea (Pisum sativum L.) and twelve chickpea (Cicer arietinum L.) accessions, having different characteristics and geographical origin, were characterised in terms of antioxidant activity, as well as macro- and micro-nutrient composition. The antioxidant activity has been evaluated using both DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) radical scavenging capacity assays. Chickpea and pea accessions showed a different behaviour in the presence of these different radicals. Chickpea accessions were characterised by significantly higher DPPH• scavenging activity, while peas showed a significantly higher value of antioxidant activity evaluated using the ABTS assay. Pea accessions had the highest content of total phenolic compounds, Zn, and Cu. A positive correlation was found between some minerals, such as Zn, Cu and P, and the ABTS•+ scavenging activity. Black and brown chickpea accessions showed significantly higher contents of anthocyanins, Mn, Mg, and Ca, which were positively correlated with the antioxidant activity assessed with the DPPH assay. Despite the dataset investigated in our study included a limited number of accessions, it was possible to highlight the influence of the chemical composition on the antioxidant activity due to the high phenotypic diversity found between the accessions, emphasising the importance of selecting the antioxidant activity assay according to the matrix to be evaluated.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 2; 177-185
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological and Biochemical Changes Induced by UV-B Radiation in Rosemary Plants Grown Under Salinity Stress
Autorzy:
Moghaddam, Abolghasem Hamidi
Arouiee, Hossein
Moshtaghi, Nasrin
Azizi, Majid
Shoor, Mahmoud
Sefidkon, Fatemeh
Powiązania:
https://bibliotekanauki.pl/articles/124221.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
antioxidant activity
cross-tolerance
hydrogen peroxide
ion content
total phenolic compounds
Opis:
Plants are exposed to solar ultraviolet radiation due to use of sunlight for photosynthesis. Additionally, salinity in soil or water influences the plant productivity and quality considerably. Moreover, when plants are simultaneously exposed to multiple stresses, one form of stress can affect the response to other stress. Particularly, it has been shown that they can benefit from dual tolerance as salinity and UV-B radiation are applied together. In order to understand the effects of UV-B radiation and salinity stress on some physiological and biochemical parameters, one-year-old cuttings of rosemary plants were grown under different levels of ultraviolet B radiation (0, 4.32 and 6.05 kJ m-2 d-1) and salinity stress (control, 50, 100 and 150 mM NaCl). The results showed that 4.32 kJ m-2 d-1 UV-B treatment significantly increased plant biomass up to 17.9% as compared to control. However, by increasing salinity to 150 mM, plant biomass significantly decreased up to 18.1%, as compared to control. Regardless of UV-B treatments, plants, grown under 100 mM salinity stress, had produced 2.8 times higher total phenolic compounds (TPC) and also have greater antioxidant activity (33.1%) in comparison to control. Both treatments, enhanced UV-B radiation and salinity stress, significantly increased the concentration of proline, hydrogen peroxide (H2O2) and malondealdehyde (MDA). In relation of total soluble sugar (TSS) and ion content, both treatments acted in an opposing manner. In turn, the enhanced UV-B radiation decreased concentration of TSS and the Na+ content in leaves, salinity stress increased the concentration of TSS, as well as the Na+ content in leaves and root. The plants grown under 150 mM salinity level accumulated 5.32 and 2.83 times higher Na+ ions in leaves and roots, respectively, than control. In addition, salinity significantly decreased the relative water content (RWC), photosynthetic pigments and K+ content in leaves and roots. The interaction between UV-B irradiation and salinity showed that the UV-B radiation improved the K+ content in leaves, RWC and membrane stability and consequently resulted in a better tolerance of rosemary to salinity.
Źródło:
Journal of Ecological Engineering; 2019, 20, 5; 217-228
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Rye (Secale Cereale L.) Phenolic Compounds as Health-related Factors
Autorzy:
Dynkowska, Wioletta M.
Powiązania:
https://bibliotekanauki.pl/articles/2199731.pdf
Data publikacji:
2019-12-30
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
(Secale cereale L)
Rye
phenolic compounds
antioxidant activity
health potential
rye bread
Opis:
The diversity of phenolic compounds found in rye grain makes this cereal the valuable source of these substances in everyday food. Simple phenolic compounds, as well as their metabolites, show a pro-health effect. Phenolic acids and ferulic acid dehydrodimers are included in the group of cereal antioxidants. The antioxidant activity of phenolic compounds is an essential factor in the prevention of cancer and cardiovascular diseases.
Źródło:
Plant Breeding and Seed Science; 2019, 79; 9-24
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of extraction technique on yield and antioxidant activity of extracts from Moringa oleifera leaf
Autorzy:
Dzięcioł, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/778776.pdf
Data publikacji:
2020
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Moringa oleifera
extracts
antioxidant activity
DPPH radical scavenging method
total phenolic content.
Opis:
The article presents research on the exploring of extraction process of biologically active substances from the leaves of the Moringa oleifera tree using ethanol. Ethanolic extracts were obtained using three different techniques: maceration with shaking, ultrasound-assisted extraction and extraction in Soxhlet apparatus, in different time variants: 1, 2 and 4-hours. After solvent evaporating and drying, the yields of dry extracts obtained in particular processes were calculated. The antioxidant activity of extracts was analyzed spectrophotometrically using DPPH radical scavenging method, and total phenolic content (TPC) was determined by Folin-Ciocalteu method. By means of gas chromatography with mass selective detector (GC-MS), 11 biologically active compounds present in ethanolic extracts were identified, among which α-tocopherol had the greatest share. Based on the results, the influence of the extraction technique and time on the yield and antioxidant activity of M. oleifera leaf extracts were discussed.
Źródło:
Polish Journal of Chemical Technology; 2020, 22, 4; 31-35
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phenolic Composition, and Antioxidant and Antineurodegenerative Potential of Methanolic Extracts of Fruit Peel and Flesh of Pear Varieties from Serbia
Autorzy:
Savić, Aleksandra
Alimpić Aradski, Ana
Živković, Jelena
Šavikin, Katarina
Jarić, Snežana
Marin, Petar D.
Duletić-Laušević, Sonja
Powiązania:
https://bibliotekanauki.pl/articles/1363265.pdf
Data publikacji:
2021-06-10
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
pear fruit
traditional varieties
methanolic extracts phenolic composition
antioxidant activity
antineurodegenerative activity
Opis:
Pear (Pyrus communis L.) is consumed as fresh fruit, in numerous food products, and also used as a traditional remedy in various countries, including Serbia. In search of bioactive compounds, six traditional pear varieties (‘Vidovača’, ‘Lubeničarka’, ‘Karamanka’, ‘Jeribasma’, ‘Lončara’, ‘Takiša’) and wild pear from Serbia were investigated and compared with a commercial variety (‘Williams Bartlett’). The aim of this study was to determine the total phenolic and flavonoid contents, phenolic composition, antioxidant capacity, and antineurodegenerative activities of methanolic extracts of peel, flesh, and mixed peel and flesh of pear fruits. Phenolic composition of extracts was determined with HPLC-DAD, while the antioxidant activity of extracts was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), and ferric-reducing antioxidant power (FRAP) assays. Bearing in mind that oxidative stress is closely linked to neurodegeneration, the antineurodegenerative potential of the extracts was assessed by the inhibition of acetycholineserase (AChE) and tyrosinase (TYR) activities. The extracts of traditional varieties, particularly peel extracts, had a high content of phenolics, as well as significant antioxidant and moderate antineurodegenerative potential, compared to the commercial variety. The highest contents of total flavonoids and individual compounds, such as arbutin and chlorogenic acid, as well as the strongest antioxidant and TYR inhibitory activities were reported for the ‘Takiša’ peel extract. The performed analyses have revealed that fruits of traditional Serbian pear varieties are rich in bioactive components and could be used as functional food and for possible nutraceutical applications, to prevent diseases induced by oxidative stress.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 2; 225-236
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the content of phenolic acids and their antioxidant activity in winter cereal seeds
Autorzy:
Gałązka, A.
Gawryjołek, K.
Żuchowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1190184.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
antioxidant activity
DPPH·
early stage germination
phenolic acids
winter barley
winter rye
winter wheat
Opis:
Grains of three cultivars of each cereal: winter wheat (Triticum aestivum L. – Tonacja, Bogatka, Satyna), winter rye (Secale cereae L. – Stanko, Dańkowskie Złote, Amilo) and winter barley (Hordeum sativum L. – Laverola, Mertada, Merk) were examined. In addition, phenolic acids were identified in these grains, and the content of the identified acids, i.e. ferulic, vanillic, p-coumaric, protocatechuic, p-hydroxybenzoic, syringic, sinapic and caffeic, was determined. The antioxidant properties of phenolic acids were examined using the free radical scavenging method against a stable 2.2-diphenyl-1-pikrylhydrazyl radical (DPPH). The antiradical efficiency of phenolic acids depended on the duration of a reaction and genotype-specific properties. The data showed that different winter cereal seed extracts were able to quench 15-47% of DPPH radical solution and to exhibit potent radical scavenging activity. Results of the determinations of the content of phenolic acids in grains of the cultivars correlated with the activity of their extracts. The tested cereal grains were characterized by different levels of the identified phenolic acids, depending on the generic and specific characteristics. Differences in the content of phenolic acids may be subject to genetic traits, environmental factors and different analytical procedures. Cereal kernels with a higher phenolic acid content also exhibited a higher antioxidant activity of extracts with these compounds. Kernels of winter barley cv. Metaxa with a higher content of phenolic acids were also characterized by higher antioxidant activity than those of cvs. Merle and Laverola. The lowest content of phenolic acids was observed in winter rye cv. Stanko. 5-day seedlings showed a statistically significant increase in phenolic acids (ferulic, p-coumaric, protocatechuic, p-syringic, sinapic and caffeic) and the high antioxidant activity. Winter cereal seed extracts were able to quench 15-47% of DPPH radical solution and exhibited potent radical scavenging activity.
Źródło:
Journal of Elementology; 2017, 22, 2; 593-605
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the substrate composition on yield and quality of basil (Ocimum basilicum L.)
Autorzy:
Burdina, I.
Priss, O.
Powiązania:
https://bibliotekanauki.pl/articles/1868.pdf
Data publikacji:
2016
Wydawca:
Instytut Ogrodnictwa
Tematy:
basil
Ocimum basilicum
yield
quality
total phenolic compound
ascorbic acid
carotenoid
essential oil
antioxidant activity
Źródło:
Journal of Horticultural Research; 2016, 24, 2; 109-118
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie zawartości związków fenolowych i aktywności antyoksydacyjnej u wybranych gatunków traw z kolekcji Ogrodu Botanicznego KCRZG w Bydgoszczy
Comparative studies on the contents of phenolic compounds and antioxidant activity of selected grass species from the collection of the Botanical Garden of National Centre for Plant Genetic Resources in Bydgoszcz
Autorzy:
Majtkowski, Włodzimierz
Balcerek, Maciej
Majtkowska, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/2199193.pdf
Data publikacji:
2016-12-30
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
ogólna zawartość związków fenolowych
aktywność przeciwutleniająca
trawy
total amount of phenolic compounds
antioxidant activity
grasses
Opis:
W pracy przedstawiono wyniki zawartości związków fenolowych oraz aktywności przeciwutleniającej w wybranych gatunkach traw, zgromadzonych w Narodowej Kolekcji Traw, zlokalizowanej w Ogrodzie Botanicznym Krajowego Centrum Roślinnych Zasobów Genowych, Instytutu Hodowli i Aklimatyzacji Roślin — PIB w Bydgoszczy. Badania prowadzono w ramach współpracy z Katedrą i Zakładem Farmakognozji Collegium Medicum im. L. Rydygiera w Bydgoszczy, Uniwersytetu Mikołaja Kopernika w Toruniu. Do badań, prowadzonych w latach 2008–2015, wybrano nadziemne części 15 gatunków traw: Andropogon distachyos L., A. gerardi Vitm., A. hallii Hack., A. saccharoides Sw., A. scoparius Michx., Dichanthium caucasicum (Trin.) S.K. Jain & U.R. Deshp., Hierochloë odorata (L.) P. Beauv., H. repens (Host) Simonkai, Melica ciliata L., M. persica Kunth, M. transsilvanica Schur, Miscanthus giganteus J.M. Greef & M. Deuter, M. sacchariflorus (Maxim.) Hack., M. sinensis (Thunb.) Anderss., Spodiopogon sibiricus Trin. Dla 3 gatunków z rodzaju Miscanthus badania wykonano także dla części podziemnych. Przeprowadzona analiza obejmowała spektrofotometryczne oznaczenie zawartości fenoli farmakopealną metodą z zastosowaniem odczynnika Folin-Ciocalteau (FP VI) oraz określenie aktywności przeciw¬utleniających metanolowych wyciągów z wykorzystaniem roztworu rodnika DPPH•. Najwyższą zawartością związków fenolowych, w przeliczeniu na pirogalol, charakteryzował się wyciąg z Spodiopogon sibiricus — 2,74%, a najniższą odnotowano w wyciągu z Hierochloë repens — 0,72%. Najwyższą aktywność przeciwutleniającą wykazywał wyciąg z rizomów Miscanthus giganteus (81,76%), a najniższą zdolność do zmiatania wolnych rodników stwierdzono w wyciągu z Melica persica (12,66%).
The aim of the study was to compare the contents of the active compounds in the extracts obtained from the grasses from the collection of the Botanical Garden of National Centre for Plant Genetic Resources in Bydgoszcz. The study was conducted in cooperation with Pharmacognosy Nicolaus Copernicus University Collegium Medicum in Bydgoszcz. For 15 species (Andropogon distachyos, A. gerardi, A. hallii, A. saccharoides, A. scoparius, Dichanthium caucasicum, Hierochloë odorata, H. repens, Melica ciliata, M. persica, M. transsilvanica, Miscanthus giganteus, M. sacchariflorus, M. sinensis, Spodiopogon sibiricus), the contents of phenols and antioxidant activities were examined, in period 2008-2015. The percentage value of phenols was determined by the colorimetric method of Folin-Ciocalteau described in the Pharmacopoeia Polonica VI. The results are expressed with the use of the pyrogallol. The highest content of phenolic compounds was observed for the herb of Spodiopogon sibiricus (2.74%). Hierochloë repens was characterized by the lowest percentage value of polyphenols (0.72%). The antioxidant activity expressed as the degree of inhibition of DPPH• radical was investigated. The highest value was shown by a methanol extract of rhizoms Miscanthus giganteus (81.76%). The weakest effect was observed in the case of an extract of herb M. persica (12.66% inhibition of radical DPPH•).
Źródło:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2016, 280; 79-86
0373-7837
2657-8913
Pojawia się w:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phenolic, carotenoid, ascorbic acid contents and their antioxidant activities in bell pepper
Autorzy:
Akhtar, M.
Ahmad, A.
Masud, T.
Wattoo, F.H.
Powiązania:
https://bibliotekanauki.pl/articles/12661132.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
sweet pepper
chemical composition
phenolic acid
carotenoid content
ascorbic acid content
antioxidant activity
Opis:
Essential nutritional components are quantified in the study in addition to major antioxidants, carotenoids, phenols and flavonoids. Their antioxidant activities were also analyzed using DPPH, ABTS and hydrogen peroxide radical scavenging activities and by determining their iron reducing power. Results indicated that the highest quantity of nutritional and antioxidant components was obtained in red variety (4.63 mg/g ascorbic acid, 10.32 mg/g total carotenoid content, 61.50 mg/g total flavonoid content, 310.27 mg/g total phenolic content) followed by orange, yellow and green varieties. Similar trend was observed while analyzing their antioxidant activities by different methods. In studying correlation between components and antioxidant activity, a strong correlation was obtained for ABTS radical scavenging activity with total phenolic content (R2 = 0.722) and total carotenoid contents (R2 = 0.709), while moderate correlation was observed for ABTS radical scavenging activity with total flavonoid contents (R2 = 0.517) and ascorbic acid (R2 = 0.673).
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 1; 13-21
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of in vitro antioxidative activities of crude methanolic extracts of three species of Passiflora from greenhouse using DPPH, ABTS and FRAP methods
Autorzy:
Ożarowski, Marcin
Pietrowiak, Aurelia
Gryszczyńska, Agnieszka
De A.Chaves, Douglas Sigueira
Krajewska-Patan, Anna
Wielgus, Karolina
Seremak-Mrozikiewicz, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2048750.pdf
Data publikacji:
2019
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
passionflower
herbal extract
antioxidant activity
DPPH
ABTS
FRAP
phenolic compound
passiflora
ekstrakt ziołowy
aktywność antyoksydacyjna
związki fenolowe
Opis:
Introduction:. It is well documented that many species from Passifloraceae family can provide edible and nutritious fruits while the leaves of cultivated plants are renewable and waste material. This biomass may be further used in various sectors, especially as a bioactive food additive and as source of innovative pharmaceuticals, cosmetics or feed additives. The biomaterials and green chemistry are new sectors bioeconomy according to the high-level horizontal strategies and bio-based industries in Europe. In recent years, attention has been paid to the biological activity and phytochemical profiles of extracts from different species of Passiflora. However, there is little comparative studies using the same procedures and techniques in the same laboratory conditions for study of plant material obtained from the similar greenhouse conditions. Objective: This study was focused on the examination of antioxidative activities of low concentrations of crude extracts from leaves of Passiflora incarnata L., Passiflora caerulea L., and Passiflora alata Curtis. Methods: The activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging and ferric reducing antioxidant power (FRAP) methods. Results of study were supported by estimation of chemical composition with secondary metabolites profiling in extracts which were carried out previously for the same extracts from three Passiflora species. One-way ANOVA analysis revealed significant differences in the antioxidant activity of various concentrations of the extracts using the DPPH and ABTS radical models, and FRAP method. Results: Measurement of antioxidant capacity (expressed as trolox equivalent, TE) showed that the most active was extract of P. caerulea > P. alata > P. incarnata. Phytochemical analysis for extracts of P. caerulea and P. incarnata showed greater similarities in metabolites content than P. alata. However, comparative statistical analysis of antioxidant activity showed that despite this phytochemical similarities, extract from P. alata leaves had higher activities than extract from leaves P. incarnata. Antioxidant effect of extract from P. alata can be explain by terpenoids presented in this extract. In this work, there have been discussed activities against Acanthamoeba castellanii strain, antibacterial and antifungal activities against selected clinical microorganisms (Enterococcus faecalis, Escherichia coli, Staphylococcus aureus, and Candida albicans, Microsporum gypseum), and anti-leukemic activities tested in human acute lymphoblastic leukemia cell lines for this extracts, which have been described in previous authors’ publications. Conclusion: Our current and previous studies showed that the same crude extracts from leaves of P. alata, P. caerulea, P. incarnata exerted not only antioxidant potential in vitro but also few interesting properties such as antibacterial, antifungal, amoebostatic, amoebicidal activities, which indicate the possibility of using these extracts in both a healthy diet and natural cosmetics. Leaves of this species may become an interesting source of biomaterials which can exert health-promoting effects.
Źródło:
Herba Polonica; 2019, 65, 3; 10-21
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies