Evaluation of dynamic changes and formation regularity in volatile flavor compounds in Citrus reticulata 'chachi' peel at different collection periods using gas chromatography-ion mobility spectrometry

文献类型： 外文期刊

第一作者： Liu, Haocheng

作者： Liu, Haocheng;Wen, Jing;Xu, Yujuan;Wu, Jijun;Yu, Yuanshan;Fu, Manqin;Liu, Haocheng;Wen, Jing;Yang, Jiguo;Liu, Haiyang

作者机构：

关键词： Dried Citrus reticulata ?Chachi? pericarp; Gas chromatography -ion mobility; spectrometry; Partial least squares discriminant analysis; Different collection periods; Variable importance in the projection

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.056； 五年影响因子：6.295 ）

ISSN： 0023-6438

年卷期： 2022 年 171 卷

页码：

收录情况： SCI

摘要： Citrus reticulata 'Chachi' is a commercially important and predominantly cultivated tangerine cultivar in Xinhui County, Guangdong, China. The dried C. reticulata 'Chachi' pericarp (CRCP), known as "Guangchenpi" in Mandarin has unique flavor properties, and has been used as a highly valuable nutritional food source and in traditional medicine for centuries. In this study, headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) and partial least squares-discriminant analysis (PLS-DA) were adopted to rapidly and comprehensively evaluate the flavor compounds of dried CRCP, and to identify their dynamic changes at different fruit picking stages. Results revealed a total of 71 volatile compound in the samples at six different fruit picking stages. The C6-C9 alcohols and aldehydes with aromatic green grass profiles had higher concentrations in the early fruit picking stages (from July to October), while most terpenes, ketones, and esters with typical aromas of mature flowers and fruits were highly accumulated in the late fruit picking stages (from November to December). PLS-DA results showed that samples picked in different stages could effectively be divided into relatively independent clusters, and the variable importance in projection (VIP) models identified 12 representative flavor compounds, which could be used as flavor markers for distinguishing CRCP samples picked at different stages.

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