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. 2016 Jul 13;11(7):e0158942. doi: 10.1371/journal.pone.0158942

Fig 2. Metal chelating activities of (a) stem, (b) leaf, and (c) flower extracts of S. ferruginea and positive control (EDTA).

Fig 2

Results are means ± SD (n = 3). Points marked with different letters are significantly different at P < 0.05 when compared at the same concentration determined by two-way ANOVA. The positive control (EDTA) showed a significantly higher scavenging capacity as compared to the samples (P < 0.05).