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题名: Phenolic antioxidants from green tea produced from Camellia taliensis
作者: Gao, Da-Fang1, 2; null(张颖君)1; Yang, Chong-Ren1; Chen, Ke-Ke1; Jiang, Hong-Jian3
刊名: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
关键词: Camellia taliensis ; green tea ; hydrolyzable tannins ; 1,2-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-beta-D-glucopyranose ; phenolic antioxidants ; HPLC analysis
英文摘要: The chemical constituents of green tea prepared from the leaves of Camellia taliensis (W. W. Smith) Melchior (Theaceae) were investigated for the first time. Of these, 19 phenolic compounds including 8 hydrolyzable tannins (1-8), 6 catechin derivatives (9-14), 3 quinic acid aromatic esters (15-17), and 2 simple phenolics (18, 19) were identified, along with caffeine (20). Their antioxidant activities were evaluated by DPPH radical scavenging and tyrosinase inhibitory assays. Moreover, the chemical composition was compared with that in the cultivated tea plant, C. sinensis var. assamica, by HPLC analysis. It was noted that C. taliensis has similar chemical features with the cultivated tea plant; that is, both of them contain rich flavan-3-ols and caffeine. In addition, there are abundant hydrolyzable tannins as specific characteristic constituents contained in the leaves of C. taliensis. Therein, 1,2-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-beta-D-glucopyranose (8), as a major compound in C. taliensis, showed remarkable antioxidant activity. The results suggested that C. taliensis could be a valuable plant resource for the production of tea.
出版日期: 2008-08-27
卷号: 56, 期号:16, 页码:7517-7521
语种: 英语
收录类别: SCI
学科分类: Agriculture; Multidisciplinary; Chemistry; Applied; Food Science & Technology
ISSN号: 0021-8561
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/1805
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 W China, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Tea Adm Off Govt Lincang City, Lincang 677000, Yunnan Province, Peoples R China

Recommended Citation:
Gao, DF; Zhang, YJ; Yang, CR; Chen, KK; Jiang, HJ.Phenolic antioxidants from green tea produced from Camellia taliensis,JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,2008,56(16):7517-7521
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