Deodorizing Effects of Tea Catechins on Amines and Ammonia(Food & Nutrition Science)

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概要

• 論文の詳細を見る

• Deodorizing effects of tea catechins on amines were examined under alkaline conditions to eliminate the neutralization reaction. They showed deodorizing activity on ethylamine, but none on dimethylamine or trimethylamine. Deodorizing activity on ethylamine was found to be in the order of (-)-epigallocatechin gallate ≫ gallic acid >(-)-epigallocatechin (EGC) > (-)-epicatechin gallate > ethyl gallate > (+)-catechin = (-)-epicatechin. Further, reaction products of EGC with methylamine, ethylamine, and ammonia were detected by HPLC, indicating that a deodorizing reaction other than neutralization occurs. From structural analysis of the reaction product with the methylamine isolated as a peracetylated derivative, the product was presumed to be methylamine substituted EGC, in which the hydroxyl group of EGC at the 4' position is replaced by the methylamino group. The same replacement reaction took place in the case of ethylamine and ammonia.

• 社団法人日本農芸化学会の論文
• 2002-02-23

著者

• Nanjo Fumio

  Central Research Laboratories Tokyo Food Techno Co. Ltd.

• SUZUKI Masayuki

  Central Research Laboratory, Dowa Mining Co., Ltd.

• Takagaki A

  Lab. Of Tea Function R&d Food Res. Laboratories Mitsui Norin Co. Ltd.

• KIDA Kazuaki

  Central Research Laboratories, Tokyo Food Techno Co. Ltd.

• TAKAGAKI Akiko

  Central Research Laboratories, Tokyo Food Techno Co. Ltd.

• Kida Kazuaki

  Central Research Laboratories Tokyo Food Techno Co. Ltd.

• Suzuki Masayuki

  Central Research Laboratories Tokyo Food Techno Co. Ltd.

関連論文

• Identification of an Antifungal Substance Derived from the Oil-Based Extract of Licorice
• Antifungal Activity of the Saponin Fraction Obtained from Asparagus officinalis L. and Its Active Principle(Organic Chemistry)
• Deodorizing Effects of Tea Catechins on Amines and Ammonia(Food & Nutrition Science)

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