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Talanta. 2014 Nov;129:629-35. doi: 10.1016/j.talanta.2014.06.010. Epub 2014 Jun 17.

Characterization of volatile components in four vegetable oils by headspace two-dimensional comprehensive chromatography time-of-flight mass spectrometry.

Author information

  • 1Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
  • 2Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China; Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China. Electronic address: liangxiao_zhang@hotmail.com.
  • 3Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Key laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China; Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China; Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China. Electronic address: peiwuli@oilcrops.cn.
  • 4Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China. Electronic address: wangxiupin@caas.cn.
  • 5Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China; Key laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China.
  • 6Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China.
  • 7Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Key laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China; Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China.
  • 8Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China.

Abstract

Edible oil adulteration is the biggest source of food fraud all over the world. Since characteristic aroma is an important quality criterion for edible oils, we analyzed volatile organic compounds (VOCs) in four edible vegetable oils (soybean, peanut, rapeseed, and sunflower seed oils) by headspace comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (Headspace-GC×GC-TOFMS) in this study. After qualitative and quantitative analysis of VOCs, we used unsupervised (PCA) and supervised (Random forests) multivariate statistical methods to build a classification model for the four edible oils. The results indicated that the four edible oils had their own characteristic VOCs, which could be used as markers to completely classify these four edible oils into four groups.

Copyright © 2014 Elsevier B.V. All rights reserved.

KEYWORDS:

Chemometrics; Classification; Edible vegetable oil; Headspace GC×GC–TOFMS; Volatile organic compounds

PMID:
25127643
[PubMed - in process]
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