Antioxidant Activity of Moringa oleifera Extracts
Moringa oleifera have been evaluated for its antioxidant activity. M. oleifera leaves were extracted with methanol, ethyl acetate, dichloromethane and n hexane. The antioxidant activity of extracts were evaluated by 1,1 diphenyl 2 picrylhydrazyl (DPPH) free radical scavenging activity assay and an improved 2,2' azino bis [3 ethylbenzothiazoline sulphonate] (ABTS) radical cation decolorization assay in vitro. Trolox was used as standard with IC 50 5.89 mg/mL in DPPH assay and 3.06 mg/mL in ABTS assay. The methanol extract showed the highest free radical scavenging activity with IC 50 value of 49.30 mg/mL in DPPH assay and 11.73 mg/mL in ABTS assay. This study provided that M. oleifera leaves possess antioxidant.