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    Wyświetlanie 1-9 z 9
    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
    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:
    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
    Artykuł
    Tytuł:
    Chemical composition, antimicrobial and antioxidant activities of Dittrichia graveolens (L.) Greuter essential oil
    Analiza składu chemicznego oraz oznaczenie aktywności przeciw- drobnoustrojowej i przeciwutleniającej olejku z Dittrichia graveolens (L.) Greuter
    Autorzy:
    Mahboubi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/72551.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    chemical composition
    antimicrobial activity
    antioxidant activity
    Dittrichia graveolens
    essential oil
    stinkwort
    borneol
    bornyl acetate
    aromatic plant
    Opis:
    The aim of the study was to survey the chemical composition, antimicrobial and antioxidant activities of Dittrichia graveolens essential oil in in vitro conditions. GC-FID and GC-MS analyses were performed to evaluate the chemical composition of essential oil. The antimicrobial activity against different kinds of microorganisms was determined by microbroth dilution assay. The antioxidant activity was evaluated by DPPH free radical scavenging system. Studies of chemical composition of essential oil revealed the presence of borneol (38.2%) and bornyl acetate (14.9%) as major constituents. Essential oil showed strong antimicrobial activity against Enterococcus faecalis isolates and Bacillus cereus. Staphylococcus aureus and Escherichia coli are less sensitive to the oil. The strong antimicrobial activity of oil against clinical isolates of bacteria was demonstrated. In addition, D. graveolens oil notably reduced the concentration of DPPH free radical with higher efficacy than that of trolox at 70 min.
    Celem niniejszej pracy była analiza składu chemicznego oraz oznaczenie w warunkach in vitro aktywności przeciwbakteryjnej i przeciwutleniającej olejku z Dittrichia graveolens. Analizę składu chemicznego przeprowadzono za pomocą chromatografii gazowej z detektorem płomieniowo-jonizacyjnym (GC-FID) oraz chromatografii gazowej sprzężonej z detektorem spektroskopii masowej (GC-MS). Właściwości przeciwdrobnoustrojowe oznaczono, wykorzystując test wielokrotnych rozcieńczeń w stosunku do różnych rodzajów drobnoustrojów. Właściwości antyoksydacyjne olejku określono przy użyciu metody zmiatania wolnych rodników DPPH. Analiza składu chemicznego olejku wykazała obecność, jako głównych składników, borneolu (38,2%) oraz octanu bornylu (14,9%). Olejek z Dittrichia graveolens wykazywał silne właściwości przeciwdrobnoustrojowe w stosunku do szczepów Enterococcus faecalis oraz Bacillus cereus, natomiast Staphylococcus aureus i Escherichia coli były mniej wrażliwe na jego działanie. W badaniach wykazano silne działanie przeciwdrobnostrojowe w stosunku do różnych szczepów bakterii wyizolowanych od pacjentów. Ponadto olejek z D. graveolans wykazywał wyraźnie wyższy stopień zmiatania wolnych rodników w obecności DPPH w czasie 70 min. w porównaniu z troloksem.
    Źródło:
    Herba Polonica; 2011, 57, 3
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antimicrobial and antioxidant activity of Epimedium pinnatum
    Przeciwbakteryjne i przeciwutleniające działanie Epimedium pinnatum
    Autorzy:
    Mahboubi, M.
    Kazempour, N.
    Hosseini, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/72643.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    antimicrobial activity
    antioxidant activity
    Epimedium pinnatum
    medicinal plant
    plant extract
    phenolics
    total phenolics
    flavonoids
    total flavonoids
    Opis:
    Epimedium pinnatum (Berberidaceae family) is used as an aphrodisiac in traditional Chinese medicine (TCM). The aim of this study was to evaluate the antimicrobial and antioxidant activity of E. pinnatum extracts (ethanol, methanol and aqueous extracts). Total phenolic (TPC) and flavonoid contents (TFC) of each extract were assessed by spectrophotometric methods. It was exhibited that methanol extract had better antimicrobial activity than those of ethanolic extract or aqueous extract. The TPC and TFC of E. pinnatum extracts was higher in methanol extract (149 and 36.6 mg/g) than that of ethanolic extract (137.2 and 19.5 mg/g) and aqueous extract (86.2 and 8.4 mg/g). The methanol extract had lower IC50 value (200 µg/ml) than ethanolic (250 µg/ml) and aqueous extract (400 µg/ml). There was a positive correlation between TPC, TFC in E. pinnatum extract and their antioxidant and antimicrobial activity.
    W tradycyjnej medycynie chińskiej Epimedium pinnatum (rodzina Berberidaceae) używa się jako afrodyzjaku. Celem niniejszej pracy była ocena działania przeciwbakteryjnego i przeciwutleniającego wyciągów: etanolowego, metanolowego i wodnego z Epimedium pinnatum. Całkowita zawartość fenoli i całkowita zawartość flawonoidów w każdym z wyciągów została oznaczona metodami spektrofotometrycznymi. Wykazano, że wyciąg metanolowy miał lepsze działanie przeciwbakteryjne niż wyciąg etanolowy i wodny. Całkowita zawartość fenoli i całkowita zawartość flawonoidów była wyższa w wyciągu metanolowym (149 i 36,6 mg/g) niż etanolowym (137,2 i 19,5 mg/g) i wodnym (86,2 i 8,4 mg/g). Wyciąg metanolowy miał niższą wartość IC50 (200 µg/ml) niż wyciąg etanolowy (250 µg/ml) i wodny (400 µg/ml). Zauważono pozytywną korelację między całkowitym stężeniem fenoli i całkowitym stężeniem flawonoidów w wyciągach z E. pinnatum, a ich działaniem przeciwutleniającym i przeciwbakteryjnym.
    Źródło:
    Herba Polonica; 2013, 59, 2
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytochemical and bioactivity diversity in the extracts from bulbs and leaves of different populations of Allium jesdianum, a valuable underutilized vegetable
    Autorzy:
    Ghasemi Pirbalouti, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/12300024.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    wild plant
    vegetable
    Yazdi onion
    Allium jesdianum
    endemic species
    bulb
    leaf
    plant population
    phytochemical diversity
    antioxidant activity
    antimicrobial activity
    antioxidant agent
    antimicrobial agent
    useful plant
    Opis:
    Allium jesdianum Boiss. & Buhse (Yazdi onion) belonging the family Alliaceae, is an endemic species of Iran that grows wild in the Zagros Mountains range, southwestern Iran. The indigenous people of Iran use the leaves and bulbs of A. jesdianum for the treatment of colds and kidney problems. The bulbs and leaves of various populations of the plant were collected from the alpine regions in Chaharmahal va Bakhtiari province, southwestern Iran. The total phenolic content of ethanol extract was determined by FolinCiocalteu method, the antioxidant activity was evaluated measuring 1,1-diphenyl-2-picrylhydrazyl (DPPH), and the antibacterial activity of the extracts against four bacteria was determined by serial dilution assay. Results indicated that the total phenolic content in ethanol extracts from leaves and bulbs of A. jesdianum ranged between 27.83 to 98.23 mg GAE/g extract. A comparison of all plant extracts in the DPPH assay indicated that ethanol extracts from the populations of A. jesdianum leaves were the most effective free radical scavenging agents. The extracts indicated moderate-to-good inhibitory activities against four bacteria, especially against B. cereus. This finding suggests that the bulbs and leaves of A. jesdianum may be considered a natural source of antioxidants and antimicrobial agents.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 115-122
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laetiporus sulphureus - chemical composition and medicinal value
    Autorzy:
    Sułkowska-Ziaja, K.
    Muszyńska, B.
    Gawalska, A.
    Sałaciak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/11880210.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    mushroom cultivation
    Laetiporus sulphureus
    mushroom
    mushroom extract
    chemical composition
    biological activity
    antimicrobial activity
    anticancer activity
    cytotoxic activity
    hypoglycemic activity
    antiinflammatory activity
    antioxidant activity
    medicinal use
    cultivation experiment
    Opis:
    The higher fungi are a rich source of chemical compounds with multi-directional therapeutic and pro-health effects. This review summarizes the results of the most important chemical and biological studies of the fruiting bodies and the mycelial cultures of Laetiporus sulphureus. Numerous studies have demonstrated the antimicrobial, anticancer, cytotoxic, hypoglycemic anti-inflammatory and antioxidant activity of the extracts. Currently, only a few wood-decay fungi have practical use in medicine. Therefore it seems important to continue research on the effectiveness and safety of extracts and compounds of natural origin, including fungi, whose potential is not still used.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 1; 87-96
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Olejki eteryczne jako substancje aktywne lub konserwanty w kosmetykach
    Essential oils as an active ingredients or preservativies in cosmetics
    Autorzy:
    Adaszyńska, M.
    Swarcewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/172463.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    olejki eteryczne
    konserwacja alternatywna
    konserwacja naturalna
    działanie przeciwdrobnoustrojowe
    działanie antyoksydacyjne
    biopestycydy
    essential oils
    alternative and natural preservation
    antimicrobial activity
    antioxidant activity
    biopesticides
    Opis:
    An important trend in current cosmetic industry is increasing demand for new, biologically active compounds and preservatives of natural origin. These products constitute a major ingredients of natural (organic) cosmetics and usually may also be used in typical cosmetics as functional additives. This work summarizes the perspectives of the use of essential oils as active ingredients and preservatives in cosmetic products and as biopesticides. Brief characteristics of essentials oils, their preparation and biological activity is provided. Literature data suggests that essential oils exhibit broad therapeutic effects including antibacterial, antiseptic, antifungal and antioxidant activity, they can be also used as transdermal enhancers. On the other hand, in essential oil have been found compounds which can be use as a biopesticides. The use of essential oils in cosmetic products is possible, but requires a detailed knowledge regarding their compatibility, active concentration as well as toxicological and skin irritant characteristics. The literature review, presented in this paper, shows the great potential of essential oils as a biologically active preservatives and antioxidants, repellents and transepidermal enhancers.
    Źródło:
    Wiadomości Chemiczne; 2012, 66, 1-2; 139-158
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Composition, antioxidant and antimicrobial activities of cold-pressed and distilled essential oils of Origanum onites L. and Lavandula officinalis L. relationships evaluated by SEM microscopy
    Autorzy:
    Erturk, O.
    Aydin, G.
    Ayvaz, M.C.
    Baskan, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049191.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    Origanum onites
    Lavandula angustifolia
    essential oil
    antioxidant activity
    antimicrobial activity
    morphological change
    scanning electron microscopy
    chemical component
    gas chromatography-mass spectrometry
    oregano
    lawenda
    olejek eteryczny
    działanie antyoksydacyjne
    analiza GC-MS
    działanie przeciwdrobnoustrojowe
    Opis:
    Introduction: In order to prevent increased bacterial resistance, it is important to use herbal medicines with less side effects. Objective: In this study, the chemical composition, antimicrobial, antioxidant activities and SEM images of Lavandula officinalis and Origanum onites oils obtained in two different ways were determined. Methods: The antimicrobial activity of the oils was determined against reference and multiple strains of foodborne and pathogenic bacteria. The each essential oil sample were analyzed by GC–MS. Antioxidant activities of the samples were examined through DPPH• and ABTS•+ radical scavenging and FRAP assays. Results: The results indicate that the oils of obtained from Origanum onites and Lavandula officinalis exhibited relatively strong antibacterial and antifungal activity. In addition, the antioxidant activities detected were remarkable. Morphological changes in bacterial cells treated with essential oil samples were demonstrated with SEM images. In addition, the chemical components of the oil samples obtained by both water steam and cold press were revealed by GC-MS analysis and compared. Conclusion: When all the obtained results are evaluated together; these plants could be suitable for using as antimicrobial and antioxidative agents in several industries such as food, cosmetic, etc.
    Źródło:
    Herba Polonica; 2020, 66, 4; 43-54
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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