Analysis of naturally occurring 3 ''-Methyl-epigallocatechin gallate in 71 major tea cultivars grown in China and its processing characteristics

文献类型： 外文期刊

第一作者： Lv, Hai-peng

作者： Lv, Hai-peng;Yang, Ting;Ma, Cheng-ying;Wang, Chuan-pi;Shi, Jiang;Zhang, Yue;Peng, Qun-hua;Tan, Jun-feng;Guo, Li;Lin, Zhi

作者机构：

关键词： Camellia sinensis;3 ''-Methyl-epigallocatechin gallate;Epigallocatechin gallate;Cultivars;Processing characteristics

期刊名称：JOURNAL OF FUNCTIONAL FOODS （ 影响因子：4.451； 五年影响因子：4.907 ）

ISSN： 1756-4646

年卷期： 2014 年 7 卷

页码：

收录情况： SCI

摘要： Naturally occurring 3 ''-Methyl-epigallocatechin gallate (EGCG3 '' Me) in the young tea leaves of 71 major tea cultivars grown in China and its processing characteristics were analyzed. The results revealed that four tea cultivars were found to contain higher levels of EGCG3 '' Me (>10 mg/g). There were significant regional characteristics in the distribution features of these Chinese tea cultivars rich in EGCG3 '' Me. The levels of EGCG3 '' Me were the highest in the third leaf among the tea leaves from different positions of young shoots with a bud and five leaves. The content of EGCG3 '' Me increased distinctly during the withering process, whereas the content declined drastically during the fermentation process. Based on these results, a better way to produce tea leaves rich in EGCG3 '' Me is proposed, which includes picking standards for fresh tea leaves and for processing methods. This study provides a solid foundation for the further exploitation and utilization of natural EGCG3 '' Me in the food and pharmaceutical areas. (C) 2013 Elsevier Ltd. All rights reserved.

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