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HPLC chromatogram of unripe (a) and ripe endosperm extract (b) of Nypa frutican. The peak identifications are (1) gallic acid, (2) protocatechuic acid, (3) hydroxybenzoic acid, (4) chlorogenic acid, (5) rutin, (6) cinnamic acid, (7) quercetin, and (8) kaempferol.
