Figure 2From: Antimicrobial and antioxidant flavonoids from the leaves of Oncoba spinosa Forssk. (Salicaceae)Equivalent concentrations of test samples scavenging 50% of DPPH radical (EC50). Bars represent the mean ± SD of three independent experiments carried out in triplicate. Letters a-e indicate significant differences between samples according to one way ANOVA and Waller Duncan test; p < 0.05.Back to article page