Figure 1.
High−performance liquid chromatography (HPLC) chromatograms of quercetin-3-O-glucuronide from blackcurrant extract (detection at 330 nm). Standard compounds: delphindin-3-O-glucoside (RT = 19.7) (A); delphinidin-3-O-rutinoside (RT = 22.9) (B); cyanidin-3-O-glucoside (RT = 25.5) (C); cyanidin-3-O-rutinoside (RT = 29.3) (D). Blackcurrant extract (E).