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Fig. 2 | BMC Complementary and Alternative Medicine

Fig. 2

From: Antioxidant capacities and total phenolic contents of 20 polyherbal remedies used as tonics by folk healers in Phatthalung and Songkhla provinces, Thailand

Fig. 2

Superoxide anion scavenging activity of water extracts prepared from Thai traditional polyherbal formulations. The water extracts inhibited superoxide anion production in a dose-dependent manner (a). The IC50 values (50% inhibitory concentration) are expressed as the mean ± SD (b). The IC50 value of catechin, a positive control, was 9.1 ± 0.3 μg/mL. Different letters indicate statistically significant differences (p < 0.01)

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