Surveys on the Characteristics of Excellent Japan Black Tea
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概要
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In order to make clear the characteristics of Japan black teas and the content of soluble matter, tannin, nitrogen and ash of excellent Japan black teas and some imported black teas was investigated.<BR>By this result, any distinct correlation could not be observed between the qualities of tea and the content of chemical substances, and there was not any difference on the content of chemical substances among excellent Japan and imported black teas.<BR>But some correlations were observed between the transmittancy of colour of liquor and the sensory estimation, or the ratio of (P<SUB>2</SUB>O<SUB>5</SUB>+K<SUB>2</SUB>O)/CaO.and the content of soluble matter and tannin.
- 日本茶業技術協会の論文
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