Figure 3 | Scientific Reports

Figure 3

From: Antioxidant and prebiotic activity of five peonidin-based anthocyanins extracted from purple sweet potato (Ipomoea batatas (L.) Lam.)

Figure 3

In vitro antioxidant activities of PSPAs and peonidin-based anthocyanin monomers (P1, P2, P3, P4 and P5). (a) DPPH radical-scavenging ability, (b) superoxide anion radical (O2−·) scavenging ability, (c) total reducing power, (d) chelating ability. Vc was used as positive control in DPPH radical-scavenging ability, superoxide anion radical (O2−·) scavenging ability and total reducing power evaluations. EDTA was used as positive control in the chelating ability evaluation. Different lowercase letters indicate significant differences (P < 0.05) among PSPAs and peonidin-based anthocyanin monomers at same concentration. Different capital letters indicate significant differences (P < 0.05) among different sample concentrations in each sample group.

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