Figure 2. High-pressure liquid chromatography chemical fingerprint for PowergrapeŽ: (1) gallic acid (5.9min); (2) B1 dimer (11.5min) ; (3) B3 dimer (12.9); (4) catechins (14.4min); (5) B2 dimer (18.9min); (6) epicatechin (19.3min); (7) C1 trimer (21.5min); (8) B2-3-O-gallate dimer (22.8min); (9) digallate trimer (27.3min), (10) digallate dimer (29.3min) ; (11) epicatechine-3-O-gallate (29.4min); (12) gallate trimer (30.6min).