the comparison of the antioxidant capacity of methanol extract in three species of artemisia (a. sieberi besser, a. aucheri, and a. deserti krasch)

artemisia deserti krasch (a. deserti), artemisia aucheri (a. aucheri) and artemisia sieberi besser (a. sieberi) are three members of asteraceae (compositae) family, which grow widely in the even and high areas of birjand, iran. this study has attempted to compare the total antioxidant capacity of methanol extracts of these three plants using dpph (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assay in which spectrophotometry method was used at 517 nm. the results showed that the aerial parts (ap) of a. sieberi has the highest total antioxidant capacity (ic50=11.054 mg/ml). the lowest amount of antioxidant capacity was found in the root (r) of a. aucheri (ic50= 91.408 mg/ml).