Phenolic profiles and cellular antioxidant activity of longan pulp of 24 representative Chinese cultivars
文献类型： 外文期刊
作者： Zhang, Ruifen 1 ; Khan, Sher Ali 1 ; Lin, Yaosheng 1 ; Guo, Dongliang 2 ; Pan, Xuewen 2 ; Liu, Lei 1 ; Wei, Zhencheng; 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr, Guangzhou, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou, Guangdong, Peoples R China
关键词： Longan pulp; Free phenolics; Bound phenolics; Phenolic profiles; Cellular antioxidant activity
期刊名称：INTERNATIONAL JOURNAL OF FOOD PROPERTIES （ 影响因子：2.727； 五年影响因子：2.938 ）
ISSN： 1094-2912
年卷期： 2018 年 21 卷 1 期
页码：
收录情况： SCI
摘要： The phytochemical composition and antioxidant activity of fruits are associated with their health benefits. Longan is a traditional Chinese edible and medicinal fruit, but its varietal differences in phytochemical profiles and antioxidant activity were unknown. Twenty-four longan cultivars from southern China were investigated in this study. Their total phenolic and flavonoid contents in pulp were 22.09-132.47mg gallic acid equivalents/100g and 2.48-14.26mg catechin equivalents/100g, respectively. The mean contributions of free phenolics and FLavonoids to the total were 82.5% and 94.0%, respectively. Among 10 individual phenolics detected by HPLC, the contents of epicatechin, 4-methylcatechol, chlorogenic, and vanillic acids were relatively higher. The cellular antioxidant activity (CAA) of longan pulp showed significant varietal discrepancies and positive correlation with phenolic and flavonoid contents. Phenolics in longan pulp of 24 cultivars showed lower CAA potential than many other fruits with the CAA qualities from 0.35 to 1.21 mu mol quercetin equivalent/100 mu mol total phenolics. Longan cultivars were classified into six groups by hierarchical clustering analysis. Six cultivars in group 4 and 6 had higher phytochemical contents and CAA activity.
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