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Flavonoids isolated from the fresh sweet fruit of Averrhoa carambola, commonly known as star fruit

文献类型： 外文期刊

作者： Jia, Xuchao 1 ; Xie, Haihui 1 ; Jiang, Yueming 1 ; Wei, Xiaoyi 1 ;

作者机构： 1.Chinese Acad Sci, South China Bot Garden, Key Lab South China Agr Plant Mol Anal & Genet Im, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr, Guangzhou 510610, Guangdong, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词： Averrhoa carambola L. (Oxalidaceae); Star fruit; Flavonoid; Antioxidant activity; Pancreatic lipase inhibition

期刊名称：PHYTOCHEMISTRY （ 影响因子：4.072； 五年影响因子：4.132 ）

ISSN： 0031-9422

年卷期： 2018 年 153 卷

页码：

收录情况： SCI

摘要： Thirteen flavonoids were isolated from the fresh sweet fruit of Averrhoa carambola L. (Oxalidaceae), commonly known as star fruit, and their structures were determined by spectroscopic and chemical methods. 8-Carboxymethyl-(+)-epicatechin methyl ester, pinobanksin 3-O-beta-D-glucoside, and carambolasides M-Q were undescribed structures. (+)-Epicatechin, aromadendrin 3-O-beta-D-glucoside, helicioside A, taxifolin 3'-O-beta-D-glucoside, galangin 3-O-rutinoside, and isorhamnetin 3-O-rutinoside were reported from this species for the first time. Pinobanksin 3-O-beta-D-glucoside and carambolasides M-Q showed more potent 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical cation scavenging activity (IC50 = 5.3-2.3 mu M) than l-ascorbic acid (10.5 mu M). Further, (+)-epicatechin, pinobanksin 3-O-beta-D-glucoside, isorhamnetin 3-O-rutinoside, and carambolasides O-Q exhibited weak porcine pancreatic lipase inhibitory activity.

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