Figure 2

Heatmap showing the relative abundance of six anthocyanins, twelve isoflavones, and total phenolic contents, and antioxidant activities of the studied black soybean varieties. Means are represented by colors ranging from blue for minimum values to red for maximum values. ABTS ABTS-radical scavenging activity; C-3-O-G cyanidin-3-O-glucoside; C-3-O-Ga cyanidin-3-O-galactoside; DPPH DPPH-radical scavenging activity; D-3-O-G delphinidin-3-O-glucoside; FRAP ferric reducing antioxidant power; M-3-O-G malvidin-3-O-glucoside; P-3-O-G peonidin-3-O-glucoside; Pt-3-O-G petunidin-3-O-glucoside; TAC total anthocyanin content; TIC total isoflavone content; TPC total phenolic content.