New Hydrolyzable Tannin with Potent Antioxidant and α-Glucosidase Inhibitory Activity from Black Tea Produced from Camellia taliensis

doi:10.3390/foods12132512

KIB OpenIR

	New Hydrolyzable Tannin with Potent Antioxidant and α-Glucosidase Inhibitory Activity from Black Tea Produced from Camellia taliensis
	Chen,Min; Li,Na; Zhu,Hong-Tao; Zhang,Man; Duan,Zhao-Hong; Wang,Dong; Yang,Chong-Ren; Zhang,Ying-Jun
	2023
发表期刊	FOODS
ISSN	2304-8158
卷号	12 期号:13 页码:2512
摘要	Camellia taliensis (W. W. Smith) Melchior, belonging to the genus Camellia sect. Thea., is mainly distributed from northern Myanmar to western and southwestern Yunnan province of China, and its leaves have been used to make various teas by the locals of its growing regions. The chemical constituents of C. taliensis are significantly related to those of cultivated tea plants, C. sinensis and C. sinensis var. assamica. The HPLC-ESI-MS analysis of black tea prepared from the leaves of C. taliensis showed a rich existence of polyphenols. Further comprehensive chemical study led to the separation and recognition of 32 compounds (1-32), including one new hydrolyzable tannin, 1-O-galloyl-4,6-tetrahydroxydibenzofurandicarboxyl-beta-D-glucopyranose (1), and one new natural product (24). The known compounds referred to seven hydrolyzable tannins (2-8), 10 flavonols and glycosides (9-18), and 14 simple phenolics (19-32). Their structures were elucidated by comprehensive spectroscopic analyses. Among them, 20 compounds (2, 3, 6, 7, 8, 15, 17, 18, 20-22, 24-32) were isolated from black tea for the first time. Most isolates displayed obvious antioxidant activities on DPPH and ABTS(+) assays, and the hydrolyzable tannins 1, 3-5, 7, and 8 exhibited stronger inhibitory activities on alpha-glycosidase than quercetin and acarbose (IC50 = 5.75 and 223.30 mu M, respectively), with IC50 values ranging from 0.67 to 2.01 mu M.
关键词	Camellia taliensis black tea hydrolyzable tannins antioxidant activity alpha-glucosidase inhibitory activity GREEN TEA FLAVONOL GLYCOSIDES CONSTITUENTS IDENTIFICATION POLYPHENOL LEAVES THEAFLAVINS EXTRACT
DOI	10.3390/foods12132512
WOS记录号	WOS:001033904200001
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75008
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Chen,Min,Li,Na,Zhu,Hong-Tao,et al. New Hydrolyzable Tannin with Potent Antioxidant and α-Glucosidase Inhibitory Activity from Black Tea Produced from Camellia taliensis[J]. FOODS,2023,12(13):2512.
APA	Chen,Min.,Li,Na.,Zhu,Hong-Tao.,Zhang,Man.,Duan,Zhao-Hong.,...&Zhang,Ying-Jun.(2023).New Hydrolyzable Tannin with Potent Antioxidant and α-Glucosidase Inhibitory Activity from Black Tea Produced from Camellia taliensis.FOODS,12(13),2512.
MLA	Chen,Min,et al."New Hydrolyzable Tannin with Potent Antioxidant and α-Glucosidase Inhibitory Activity from Black Tea Produced from Camellia taliensis".FOODS 12.13(2023):2512.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
10.3390_foods1213251（1414KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载