Abstract
We made a comparison between the total phenolic content, concentrations of flavonoids and antioxidant activity of four different extracts (1-butanol, ethyl acetate, chloroform, water) of Arbutus unedo L. fruit (Ericacea) of El Marsa and Terni area. The total phenolic content in the extracts was determined using the Folin-Ciocalteu reagent and it ranged between 26.57 and 48.23 gallic acid equivalents mg/g of dry weight of extract. The concentrations of flavonoids in plant extracts varied from 17.98 to 56.84 catechin equivalents mg/g. The antioxidant activity was analyzed in vitro using the DPPH reagent; among all extracts, ethyl acetate fraction from El Marsa area showed the highest antioxidant activity.
Résumé
Nous avons fait une comparaison entre la teneur en composés phénoliques totaux, les concentrations en flavonoïdes et l’activité antioxydante de quatre extraits différents (1-butanol, acétate d’éthyle, chloroforme, eau) du fruit d’Arbutus unedo L. (Ericaceae) d’El Marsa et Terni. La teneur totale des composés phénoliques dans les extraits a été déterminée en utilisant le réactif de Folin-Ciocalteu, et leur teneur varie entre 26,57 et 48,23 GAE mg/g du poids sec de l’extrait. Les concentrations de flavonoïdes dans les extraits de plante varient de 17,98 à 56,84 CE mg/g. L’activité antioxydante a été analysée in vitro en utilisant le réactif DPPH ; parmi tous les extraits, la fraction d’acétate d’éthyle venant de la zone El Marsa a montré la plus forte activité antioxydante.
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Bouzid, K., Toumi, F.B. Geoclimatic influences on the constituents and antioxidant activity of extracts from the fruit of Arbutus unedo L.. Phytothérapie 12, 229–233 (2014). https://doi.org/10.1007/s10298-014-0884-4
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DOI: https://doi.org/10.1007/s10298-014-0884-4