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Inhibition (%) of DPPH at different concentrations of WEPs extracts and standard ascorbic acid. Results are expressed as the mean ± standard deviation (n = 3). The bars with different letters are significantly different (P < 0.05) by one-way ANOVA followed by Tukey's test. SN = S.nigrum, VM = V. membranacea, DP = D. praehensilis, TM = T.madagascariense, CG= C.gynandra and AA = Ascorbic acid.
