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题名: Carboxymethyl- and Carboxyl-Catechins from Ripe Pu-er Tea
作者: Tian, Li-Wen1; Tao, Mu-Ke1, 2; Xu, Min1; Hu, Jing1; Zhu, Hong-Tao1; Xiong, Wen-Yong1; Wang, Dong1; Yang, Chong-Ren1; null(张颖君)1
刊名: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
出版日期: 2014-12-17
卷号: 62, 期号:50, 页码:12229-12234
关键词: ripe ; Pu-er tea ; carboxymethyl catechins ; carboxylcatechins ; insulin sensitivity activity
DOI: 10.1021/jf5036959
文章类型: Article
英文摘要: Ripe Pu-er tea, a special microbial postfermented tea originated from Yunnan Province, China, since ancient times, is made from green Pu-er tea prepared from the leaves of Camellia sinensis var. assamica (Theaceae). Chemical investigation on thearubigin (n-BuOH-soluble) fraction of the commercial ripe Pu-er tea, led to the identification of four new flavan-3-ol derivatives, 8-carboxymethyl-(+)-catechin (1), 8-carboxymethyl-(+)-catechin methyl ester (2), 6-carboxymethyl-(+)-catechin (3), and 6-carboxyl-(-)-gallocatechin (4), together with 18 known compounds, including other three flavan-3-ol derivatives (5-7), 10 flavonoid glycosides (8-17), two hydrolyzable tannins (18 and 19), two quinic acid derivatives (20-21), and a purine alkaloid (22). Flavonoid glycosides 8-11 are reported from tea plants for the first time. The thearubigin fraction of ripe Pu-er tea was qualitatively analyzed by HPLC, and gallic acid was found to be the major component. Compounds 4, 6-17, 21 and 22 were tested for their acute activities on insulin sensitivity in differentiated 3T3-L1 adipocytes, but none of them showed significant bioactivity at a concentration of 10 mu M.
类目[WOS]: Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
研究领域[WOS]: Agriculture ; Chemistry ; Food Science & Technology
关键词[WOS]: FLAVONOL GLYCOSIDE ; IDENTIFICATION ; FLAVAN-3-OLS ; ACTIVATION ; TANNINS ; PATHWAY ; GLUT4
收录类别: SCI ; IC
语种: 英语
WOS记录号: WOS:000346682100020
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/20413
Appears in Collections:植物化学与西部植物资源持续利用国家重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China
2.Chongqing Inst Food & Drug Control, Chongqing 401121, Peoples R China
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