Figure 2.

Antioxidant activities of Caesalpinia crista extracts. (a) Free radical scavenging activity by 2,2-diphenyl-1-picrylhydrazyl, (b) 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid), (c) hydroxyl radical scavenging activity, (d) ferric reducing antioxidant power of C. crista leaf ethyl acetate extract, C. crista leaf methanol extract, and CcWE of Caesalpinia crista. Ascorbic acid was used as positive control. The data points represent means ± standard deviation of three independent determinations