Fourteen phenolic compounds classified as hydroxybenzoic acids: gallic acid, vanillic acid, caffeic acid and syringic acid; hydroxycinnamic acids: protocatechuic acid, chlorogenic acid and p-coumaric acid; flavan-3-ols: catechin, epicatechin epicatechin gallate; flavonols: quercetrin hydrate and rutin hydrate and stilbenes: trans-resveratrol and trans-piceatannol
could be separated using optimized conditions as mentioned in the methodology section.