Changes of Volatile Organic Compounds of Different Flesh Texture Pears during Shelf Life Based on Headspace Solid-Phase Microextraction with Gas Chromatography-Mass Spectrometry

文献类型： 外文期刊

第一作者： Xu, Yuqing

作者： Xu, Yuqing;Gao, Guanwei;Tian, Luming;Cao, Yufen;Dong, Xingguang;Huo, Hongliang;Qi, Dan;Zhang, Ying;Xu, Jiayu;Liu, Chao;Xu, Yuqing;Gao, Guanwei;Tian, Luming;Cao, Yufen;Dong, Xingguang;Huo, Hongliang;Qi, Dan;Zhang, Ying;Xu, Jiayu;Liu, Chao

作者机构：

关键词： pear; volatile organic compounds; flesh texture; shelf life; HS-SPME; GC-MS

期刊名称：FOODS （ 影响因子：5.2； 五年影响因子：5.5 ）

ISSN：

年卷期： 2023 年 12 卷 23 期

页码：

收录情况： SCI

摘要： Aroma is an important sensory factor in evaluating the quality of pear fruits. This study used headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC-MS) to analyze the volatile organic compounds (VOCs) of three crispy pears and five soft pears during shelf life, and the changes in soluble solids content (SSC) were analyzed. The results showed that the SSC of the soft pears such as Nanguoli, Jingbaili and Louis was always higher than that of the crispy pears throughout shelf life. A total of 160 VOCs were detected in the eight pear varieties. Orthogonal partial least squares discriminant analysis (OPLS-DA) and hierarchical cluster analysis (HCA) combined with predictor variable importance projection (VIP) showed that the eight pear varieties could be obviously classified into six groups according to the differences in their VOCs, and 31 differential VOCs were screened out, which could be used to differentiate between pears with different flesh textures. The results of clustering heat map analysis showed that, with the extension of shelf life, the content of each different VOC did not change much in crispy pears, whereas the difference in soft pears was larger. This study confirmed the potential of determining the optimal shelf life of different pear varieties about aroma evaluation and studying the mechanism of differences in VOCs in the future.

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