Physicochemical characteristics, polyphenols and antioxidant activities of Dimocarpus longan grown in different geographical locations

文献类型： 外文期刊

第一作者： Ke, Zunli

作者： Ke, Zunli;Tan, Si;Shi, Shengyou;Tan, Si;Shi, Shengyou

作者机构：

关键词： Antioxidant capacities; UPLC-QqQ-MS/MS; Latitude; Nutritional values; Phenolic profile

期刊名称：ANALYTICAL SCIENCES （ 影响因子：1.6； 五年影响因子：1.5 ）

ISSN： 0910-6340

年卷期： 2023 年 39 卷 8 期

页码：

收录情况： SCI

摘要： Longan is widely consumed due to its high nutritional value. The growing area has substantial effect on nutrient component and secondary metabolism of fruits. The aim of this study was to analyze the differences in physicochemical characteristics, polyphenol profiles, and antioxidant activity of longan fruits grown in four regions of China. Two representative cultivars 'Shixia' and 'Chuliang' located in Chongqing, Guanxi, Zhanjiang and Hainan were collected and analyzed. The results showed that the fruit weights, edible rates, and total soluble solids were 5.63-12.57 g, 52.7-68.7% and 17.54-23.68%, respectively. The titratable acids, reducing sugars, vitamin C contents were 0.22-0.62%, 2.27-5.55% and 68.29-157.34 mg/100 g, respectively. Interestingly, contents of total polyphenols and antioxidant activities in longan pericarps from Chongqing were higher than those from low-latitude regions for two cultivars. In addition, 10 polyphenols were detected by UPLC-QqQ-MS/MS which showed that the content of polyphenols was much higher in longan pericarps than in pulps. The content of polyphenol profiles in longan was mainly influenced by its tissue distribution. Cultivar type may also affect the polyphenol profile of longan.

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