Antioxidative Flavan-3-ol Dimers from the Leaves of Camellia fangchengensis
Meng, Xiu-Hua1,3; Liu, Chang1; Fan, Rong1,4; Zhu, Li-Fang1; Yang, Shi-Xiong2; Zhu, Hong-Tao1; Wang, Dong1; Yang, Chong-Ren1; Zhang, Ying-Jun1
2018-01-10
发表期刊JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN0021-8561
卷号66期号:1页码:247-254
摘要

Camellia fangchengensis Liang et Zhong, belonging to the genus Camellia sect. Thea (Theaceae), is an endemic tea species to the south and southwest areas of Guangxi province, People's Republic of China. Known as a wild tea plant, the leaves have been used for producing green tea or black tea by the local people of its growing area. HPLC and LC-MS analysis showed the leaves contain oligomeric catechins as major phenolic components. Further detailed phytochemical study led to the identification of five flavan-3-ol dimers (1-5) including two new ones, fangchengbisflavans A (1) and B (2) from the leaves of C. fangchengensis, together with six known monomers (6-11) and one glucoside (12), in addition to gallic acid (13). Their structures were determined by extensive spectroscopic analysis. Most of the isolates displayed significant antioxidant activities in 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS(+)) radical scavenging assays. The results suggested that the leaves of C. fangchengensis, rich in flavan-3-ol oligomers and monomers as potent antioxidants, could be a valuable plant resource for the production of tea and natural beverages.

关键词Camellia Fangchengensis Theaceae Fangchengbisflavans a And b Flavan-3-ol Dimers Antioxidant Activity Hplc Lc-ms
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/60596
专题植物化学与西部植物资源持续利用国家重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Kunming Med Univ, Haiyuan Coll, Kunming 650106, Yunnan, Peoples R China
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GB/T 7714
Meng, Xiu-Hua,Liu, Chang,Fan, Rong,et al. Antioxidative Flavan-3-ol Dimers from the Leaves of Camellia fangchengensis[J]. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,2018,66(1):247-254.
APA Meng, Xiu-Hua.,Liu, Chang.,Fan, Rong.,Zhu, Li-Fang.,Yang, Shi-Xiong.,...&Zhang, Ying-Jun.(2018).Antioxidative Flavan-3-ol Dimers from the Leaves of Camellia fangchengensis.JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,66(1),247-254.
MLA Meng, Xiu-Hua,et al."Antioxidative Flavan-3-ol Dimers from the Leaves of Camellia fangchengensis".JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 66.1(2018):247-254.
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