Evaluation de l’activiste antioxydants de l'extrait méthanoïque de Cymbopogon schoenanthus l. (spreng) d'Algérie

Abstract

The main Objective of this study is to investigate the Phytochemical Screening and In-vitro evaluation of antioxidant ofCymbopogon schoenanthus L.(spreng) methanolic extract of south Algeria. The methanol extracts were subjected to phytochemical tests for secondary metabolites, tannins, saponins, steroid, alkaloids and glycosides in accordance with Trease and Evans (1987) and Harborne (1998) with little modification. The phytochemical screening investigations on of Cymbopogon schoenanthus L. plant extracts was revealed the presence of steroid, tannins, Reducing sugars, alkaloids, essential oil and flavonoids. These compounds are known to be biologically active.Theantioxidant activity of methanolic extracts has been done by using DPPH essay. The IC50 values observed for DPPH essay were 167,92±3,18μg/ml for methanolic extract of the aerial part, 78,15±1,19μg/ml of the root part.