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Example of Fr 2 (A); Fr 3 (B) and Fr 4 (C) chromatograms. Peaks: (1) ascorbic acid; (2) catechin; (3) rutin; (4) quercetin; (5) myricetin; (6) caffeic acid; (7) coumaric acid; (8) syringic acid; (9) gallic acid; (10) vanillic acid; (11) protocatechuic acid; (12) ellagic acid.
