Fig. 1
From: Synthetic anthocyanidins and their antioxidant properties
FRAP assay of synthetic anthocyanidin 1 (open triangle), 2 (multiplication sign), and 3 (open circle). Vitamin C (filled diamond) shows higher antioxidant activity under similar conditions. The antioxidants are of the same final concentration (0.15 mM), and the final concentration of Fe3+(TPTZ)2 was 735 mM