テウチグルミおよびオニグルミのタンニン成分
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概要
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Composition of tannins was investigated on walnuts, Teuchi-gurumi (Juglans regia L.) and Oni-gurumi (J.mandshurica Maxim. Var. Sieboldiana Makino). Teuchi-gurumi contained immobile and mobile asssociated tannins (A. T) Which were detected on paperchromatograms, but these tannins were not detected in Oni-gurumi. Tannic acid,(―) gallocatechin and (―) epigallocatechin were detected on paperchromatograms in Teuchi-gurumi. Total phenol (T. P), flavanan tannin (F. T) and vanillin-positive phenol (Ⅴ. P) were higher in Teuchi-gurumi than in Oni-gurumi. PolyphenoIs in Teuchi-gurumi were found to consist of V.P, and F. T in Oni-gurumi, as the major component.
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