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Bersama abyssinica Fresen (Melianthaceae) est une espece vegetale a usages therapeutiques multiples en milieu traditionnel. L’objectif de cette etude etait d’evaluer l’activite antioxydante des extraits de feuilles de Bersama abyssinica . Par la methode du piegeage du radical libre DPPH, le potentiel antioxydant a ete evalue et une exploration phytochimique a ete entreprise en vue de justifier les eventuels effets observes. Les resultats ont montre que les extraits aqueux et ethanolique 70% de Bersama abyssinica possedent une bonne activite antioxydante avec une meilleure activite pour l’extrait ethanolique. Cet extrait pourrait donc constituer une alternative a certains additifs synthetiques. Cette activite reste neanmoins nettement inferieure a celle du Trolox (antioxydant de reference), mais il s’agit d’extraits bruts contenant un grand nombre de composes bioactifs. Il est donc tres probable qu’ils contiennent des composes qui, une fois purifies, pourront presenter une activite comparable et peut-etre meme meilleure a celle du Trolox et d’autres antioxydants de synthese. Cet essai a permis de mettre en evidence le potentiel antioxydant des extraits de feuilles de Bersama abyssinica . © 2017 International Formulae Group. All rights reserved. Mots cles:  Bersama abyssinica , potentiel antioxydant, DPPH, extrait aqueux, extrait ethanolique 70% English Title:  Antiscavenging potential of leaves extracts from Bersama abyssinica Fresen. (Melianthaceae) English Abstract Bersama abyssinica Fresen (Melianthaceae) is a plant species with multiple therapeutic uses in the traditional environment. The aim of this study was to evaluate the antioxidant activity of Bersama abyssinica leaves extracts. Using the free radical DPPH trapping method, the antioxidant potential was evaluated and a phytochemical exploration was undertaken to justify any observed effects. The results showed that the aqueous and ethanolic extracts 70% of Bersama abyssinica possess good antioxidant activity with better activity for the ethanol extract. This extract could therefore be an alternative to certain synthetic additives. This activity is nevertheless clearly lower than that of the Trolox (reference antioxidant), but these are crude extracts containing a large number of bioactive compounds. It is therefore very likely that they contain compounds which, once purified, could exhibit comparable activity and perhaps even better than that of Trolox and other synthetic antioxidants. This test made it possible to demonstrate the antioxidant potential of the extracts of leaves of Bersama abyssinica . © 2017 International Formulae Group. All rights reserved. Keywords:  Bersama abyssinica , antioxidant potential, DPPH, aqueous extract, 70% ethanolic extract

Potentiel antiradicalaire des extraits de feuilles de <i>Bersama abyssinica</i> Fresen. (Melianthaceae)