Fig. 3.

Antioxidant activity effect (A) and IC₅₀ (B) of different solvent extracts from orange fruit (OF) and orange peel (OP) on total radical trapping antioxidant potential (TRAP). E, ethanol; M, methanol; A, acetone. IC₅₀: concentration for scavenging 50% of ABTS radicals. Values are mean with standard deviation. 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.