Evaluation of in vitro antioxidant and apoptotic activities of Cyperus rotundus

,The cytotoxicity（by MTT assay）and cell DNA fragmentation of both extracts were evaluated Inwards K562 and L1210 cell lines.The major compound was obtained from the butanol fraction of methanol extract and its structure was determined by KMN spectroscopic analysis.Results:The methanol and aqueous extracts showed respectively,88%and 19%inhibition of xanthine oxidase activity.Vet.the same extracts inhibited lipid peroxidation by 61.5%and 42.0%.respectively.Roth extracts inhibited OH.formation by 27.1%and 25.3%,respectively.Only methanol cxtract induced DNA degradation.Orientin was determined as the major compound isolated from the butanol fraction of metlianol extract.Conclusions:It appears that C.rotundus extracts exhibit a potential use as a natural antioxidant and an apoptosis inducer.