Antioxidant activities of leaves extracts of three species of Garcinia

The antioxidant activities of n-hexane, ethyl acetate and methanol extracts of leaves of three Garcinia species (viz. G. humbroniana Pierre, G. lateriflora Blume var. Javanica Boerl., G. kydia Roxb.) were investigated. The 1,1-diphenyl-2-picryl-hydrazyl (DPPH) assay showed the highest antioxidant activity in the methanol leaves extract of G. humbroniana Pierre with IC50 value 7.9 μg/mL, methanol leaves extract of G. lateriflora Blume var. Javanica Boerl with IC50 value 6.18 μg/mL, and the ethyl acetate leaves extract of G. kydia Roxb with IC50 value 11.6 μg/mL.