Fig. 2.
The antioxidant activity of Annona squamosa leaves extracts. a The dose-dependent DPPH scavenging activity of leaves extracts relative to that of L-ascorbic acid. b The dose-dependent hydrogen peroxide scavenging activity of leaves extracts relative to that of L-ascorbic acid. c The dose-depended nitric oxide radical scavenging activity of leaves extracts. Gallic acid and L-ascorbic acid were used as standards. d The reducing power assay of different concentrations of leaves extract, L-ascorbic acid, and BHT. All results are presented as the mean ± SD (n = 3)