Fast discrimination of avocado oil for different extracted methods using headspace-gas chromatography-ion mobility spectroscopy with PCA based on volatile organic compounds

作者：Liu, Yi-Jun; Gong, Xiao^*; Jing, Wei; Lin, Li-Jing^*; Zhou, Wei; He, Jin-Na; Li, Ji-Hua^*

来源：Open Chemistry, 2021, 19(1): 367-376.

DOI：10.1515/chem-2020-0125

• avocado oil
• extraction method
• headspace gas chromatography ion mobility mass spectrometry
• principal component analysis

To establish a method for fast discrimination of avocado oil for different extracted methods, the headspace-gas chromatography-ionmobility 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 super-critical carbon dioxide extraction methods (SC CO2). 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 CO2. 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.

• 单位
  中国科学院