Fig. 6.

Effect of supplementation with different solvent extracts from orange fruit (OF) and orange peel (OP) on H₂O₂-induced DNA damage in human leukocytes (A) and IC₅₀ (B). E, ethanol; M, methanol; A, acetone. NC, DMSO-treated normal control; PC, 200 μM H₂O₂-treated positive control. IC₅₀: concentration for scavenging 50% H₂O₂ radical. Values are mean with standard error. Values not sharing the same letter within OF or OP are significantly different from one another (P<0.05) by Duncan’s multiple range test. ^*P<0.05 significantly different between fruit and peel extract by Student t-test.