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Wyświetlanie 1-2 z 2
Tytuł:
Effect of the solvent on the extraction of polyphenols from distillery stillage and on their antioxidant activity
Autorzy:
Mikucka, Wioleta
Zielińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1830630.pdf
Data publikacji:
2021-09-29
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
DPPH assay
Folin-Ciocalteu
phenolic content
methanolic extract
ethanolic extract
Opis:
The increase in the costs of storage and disposal of post-production residues has resulted in the search for new directions for their recycling, which is closely related to the necessity of protecting the natural environment and promoting a circular economy. Moreover, the apparent interest shown by the food market in raw materials with high antioxidant activity implies an increasing use of by-products. The objective of the study was to determine the effect of the type and concentration of the solvent on the efficiency of extracting polyphenols from distillery stillage as well as their antioxidant activity by using several solvents: methanol:water (70:30 v/v), methanol:water (100:0 v/v), ethanol:water (70:30 v/v) or ethanol:water (100:0 v/v). The DPPH radical method was used to determine the antioxidant activity of the obtained extracts. The normalised variable (NV) and statistical measure (MS) were determined, based on which the effectiveness of the solvents was evaluated. The highest polyphenolic content and the antioxidant activity were obtained by using ethanol:water (70:30 v/v) as a solvent in the extraction of polyphenolic compounds from distillery stillage.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2021, 17; 54-62
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scavenging activity, anti-inflammatory and diabetes related enzyme inhibition properties of leaves extract from some varieties of Phoenyx dactylifera l.
Autorzy:
Eddine, L. S.
Segn, L.
Noureddine, G.
Mohammed Redha, O.
Mokni, Sonia
Powiązania:
https://bibliotekanauki.pl/articles/412126.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Phoenyx dactylifera L
phenolic content
leaves extract
Scavenger activity
anti-inflammatory
antidiabetic
Opis:
In this study we investigate the antioxidant, anti-inflammatory, and antidiabetic activities of ethanolic leaves extracts of three selected varieties of Phoenyx dactylifera L. namely: “Ghars”, “Deglet Nour” and “Hamraya”. The assessment of the antioxidant potential of crude leaves extracts, using superoxide anions inhibition, DPPH and total antioxidant activity essays, was carried out. Furthermore, the anti-inflammatory properties of the extracts were determined by measuring the inhibition of nitric oxide (NO) production. Moreover, the antidiabetic effect was evaluated by inhibition of α-amylase enzymes. The total phenolic content measured by Folin-ciocalteu method was as well conducted. The raw leaves extracts of the selected varieties was found to contain a high content of total phenolic content (342.45 mg GAE/gDW for GE) and therefore exhibited a higher antioxidant activity and inhibitory effect of radicals scavenging activity against DPPH and superoxide anion (IC50 = 7.44 μg/mL and 39.11 μg/mL respectively). The three varieties exhibited significant inhibition nitric oxide using in-vitro assay (IC50 = 240.28 μg/mL for GE). The extracts also displayed high inhibition actions against α-amylase enzymes. The results suggest that the leaves of the three selected varieties of Phoenyx dactylifera can be considered as a good source of natural antioxidant and anti-inflammation drugs as well as potent antidiabetic medicine.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 9, 2; 125-135
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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