Figure 1: Separation of standard mixture of phenolic compounds by HPLC (280 nm). 8.093= Procyanidin B1, 9.210= (+) Catechin, 11.753= (-) Epicatechin, 13.123= Procyanidin A2, 14.383= p-Coumaric acid, 21.807= Quercetin, 26.920= Flavone.