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    Wyświetlanie 1-3 z 3
    Tytuł:
    Screening of phytochemical profile and antibacterial activity of various solvent extracts of marine algae Sargassum swartzii
    Autorzy:
    Sujatha, Ravi
    Siva, Durairaj
    Nawas, P. Mohideen Askar
    Powiązania:
    https://bibliotekanauki.pl/articles/1076470.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    Antibacterial activity
    Pseudomonas aeruginosa
    Sargassum swartzii
    Total flavonoid
    Total phenol
    Opis:
    The present study investigates phytochemical screening and antibacterial efficacy of various solvent extracts of marine algae such as Sargassum swartzii against some selected human and fish pathogenic bacteria. The brown seaweed Sargassum swartzii was collected from Kudankulam, Tirunelveli district, Tamil Nadu, India. Soxhlet extraction method was used to get the extracts of different solvents like aqueous, ethanol, methanol, acetone and were tested for their qualitative phytochemical screening using common standard tests. Quantitative phytochemical analysis such as total phenolic content and total flavonoid content of S. swartzii and antibacterial activity against human pathogens viz., Escherichia coli, Pseudomonas aeruginosa and Stephylococcus aureus and fish pathogens viz., Aeromonas hydrophila and Vibrio vulnificus bacteria using disc diffusion methods. Preliminary phytochemical screening of sixteen different chemical compounds were carried out. The maximum biochemical compounds were present in the ethanol extract and the minimum compounds were present in aqueous extract. The ethanol extract was significantly higher in phenolic content (15.35 ±2.61 mg of GAE/g) and the methanol extract was significantly higher in flavonoides content (26.92±7.14 mg of QE/g). In human pathogen the highest antibacterial activity was present in Pseudomonas aeruginosa (18.00±0.00mm) and the fish pathogen was significantly higher in Aeromonas hydrophila. The present study showed that the ethanol extract of marine brown seaweed Sargassum swartzii contains bio active constituents with highest antibacterial activity against human and fish pathogen.
    Źródło:
    World Scientific News; 2019, 115; 27-40
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of green-extraction technique to evaluate of antioxidative capacity of wild population of fireweed (Epilobium angustifolium)
    Autorzy:
    Nowak, A.
    Klimowicz, A.
    Duchnik, W.
    Kucharski, Ł.
    Florkowska, K.
    Muzykiewicz, A.
    Wira, D.
    Zielonka-Brzezicka, J.
    Siedłowska, A.
    Nadarzewska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048950.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    Epilobium angustifolium
    antioxidant activity
    total polyphenol content
    green-extraction technique
    total flavonoid content
    aktywność antyoksydacyjna
    ogólna zawartość polifenoli
    ogólna zawartość flawonoidów
    zielona metoda ekstrakcji
    Opis:
    Introduction: Fireweed (Epilobium angustifolium (L.) Holub) is a common weed growing on meadows, roadside and agricultural wasteland, creating vast, rapidly spreading fields. Objective: The aim of the study was to evaluate the antioxidant activity of extracts from fresh fireweed, harvested at three ripening stages. Methods: Analysis of antioxidative activity was carried out by DPPH, ABTS and FRAP methods. Total polyphenol and total flavonoid content were also determined. Plant material was extracted using ultrasound-assisted green extraction technique with methanol, ethanol and isopropanol at different concentrations and water. Results: The highest antioxidant activity evaluated by DPPH, ABTS and FRAP was found for the extracts prepared in 70% ethanol. The highest content of total polyphenols were observed in extracts in 70% ethanol, whereas the highest content of flavonoids extracts in undiluted methanol. Conclusion: Epilobium angustifolium harvested at fruit ripening stage seems to be a valuable source of antioxidants.
    Źródło:
    Herba Polonica; 2019, 65, 4; 18-30
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
      Wyświetlanie 1-3 z 3

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