Polyphenolic Compounds in the Tea Plant (Part 1) : Distribution of Polyphenolic Compounds in the Various Parts of the Tea Plant

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The distribution of polyphenolic compounds in the various parts of the tea plant was examined by paperchromatography.<BR>Catechins, (-)-epicatechin, (-)-epicatechin gallate, (-)-epigallocatechin, (-)-epigallocatechin gallate, (+)-catechin, and (+)-gallocatechin were present in leaves and other green parts of the plant.: Flavonols, several kinds'of glycosides of kempferol, quercetin, and myricetin were also contained to a varying degree in the above parts. Leucoanthocyanins yielding cyanidin on heating with hydrochloric acid existed in wood-tissue as a major component of polyphenolic substances. Epicatechin was present in seed, trunk and root in addition to the green parts, and provisionally determined to be (-)-isomer by co-chromatography, therefore, this compound was seemed to be the generally occurring catechin in every part of the tea plant.