Adulteration detection of essence in sesame oil based on headspace gas chromatography-ion mobility spectrometry

文献类型： 外文期刊

第一作者： Dou, Xinjing

作者： Dou, Xinjing;Zhang, Liangxiao;Yang, Ruinan;Wang, Xiao;Yu, Li;Yue, Xiaofeng;Ma, Fei;Mao, Jin;Wang, Xiupin;Li, Peiwu;Ma, Fei;Zhang, Liangxiao;Yue, Xiaofeng;Mao, Jin;Li, Peiwu;Yu, Li;Ma, Fei;Wang, Xiupin;Li, Peiwu;Zhang, Liangxiao;Li, Peiwu

作者机构：

关键词： HS-GC-IMS; Sesame oil; Adulteration detection; Sesame essence; Marker

期刊名称：FOOD CHEMISTRY （ 影响因子：9.231； 五年影响因子：8.795 ）

ISSN： 0308-8146

年卷期： 2022 年 370 卷

页码：

收录情况： SCI

摘要： Sesame oil is a traditional and delicious edible oil in China and Southeast Asia with a high price. However, sesame oil essence was often illegally added to cheaper edible oils to counterfeit sesame oil. In this study, a rapid and accurate headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS) method was proposed to detect the counterfeit sesame oil where the other cheap oils were adulterated with essence. Combined with chemometric methods including principal component analysis (PCA), orthogonal partial least squares discriminant analysis (OPLS-DA) and random forest (RF), authentic and counterfeit sesame oils adulterated with sesame essence (0.5%, w/w) were easily separated into two groups. More importantly, 2-methylbutanoic acid, 2-furfurylthiol, methylpyrazine, methional, and 2,5-dimethylpyrazine were found to be markers of sesame essence, which were used to directly identify the sesame essence. The determination of volatile compounds based on HSGC-IMS was proven to be an effective method for adulteration detection of essence in sesame oil.

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