To establish a method for fast discrimination of avocado oil for different extracted methods, the headspace-gas chromatography-ion mobility spectroscopy (HS-GC-IMS) combined with principal component analysis (PCA) was used to analyze non-target volatile organic compounds (VOCs). The results showed that 40 VOCs were identified, and the VOCs of the extraction method had a significant difference and had been well distinguished in PCA. The species and content of avocado oil obtained by squeeze method were more than the aqueous methods and supercritical carbon dioxide extraction methods (SC CO 2 ). In addition, the different avocado oil had their characteristic compounds: the 2-acetylthiazole and ethyl propionate were the unique compounds in the avocado oil obtained by SC CO 2 . A rapid method for the determination of avocado oil obtained by different extraction methods based on HS-GC-IMS had been established, and the method was fast and simple and had a good application prospect in the prediction of avocado oil processing methods.

中文翻译：

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基于挥发性有机化合物的顶空-气相色谱-离子迁移谱和PCA快速鉴别鳄梨油的不同提取方法

为了建立一种快速鉴别鳄梨油的不同提取方法的方法，将顶空-气相色谱-离子迁移谱（HS-GC-IMS）与主成分分析（PCA）相结合来分析非目标挥发性有机化合物（ VOCs）。结果表明，已鉴定出40种挥发性有机化合物，并且萃取方法中的挥发性有机化合物有显着差异，并且在PCA中已得到很好的区分。挤压法得到的鳄梨油的种类和含量要比含水法和超临界二氧化碳萃取法（SC CO 2）多。另外，不同的鳄梨油具有其特征性化合物：2-乙酰基噻唑和丙酸乙酯是SC CO 2获得的鳄梨油中的独特化合物。