Triacylglycerol compositions of sunflower, corn and soybean oils examined with supercritical CO2 ultra-performance convergence chromatography combined with quadrupole time-of-flight mass spectrometry

  • Food Chem. 2017 Mar 1:218:569-574. doi: 10.1016/j.foodchem.2016.09.099.
Boyan Gao  1 ,  Yinghua Luo  2 ,  Weiying Lu  3 ,  Jie Liu  4 ,  Yaqiong Zhang  5 ,  Liangli Lucy Yu  6
Affiliations
  • 1. Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China; Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
  • 2. Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
  • 3. Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
  • 4. Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University, Beijing 100048, China.
  • 5. Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China. Electronic address: [email protected].
  • 6. Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA. Electronic address: [email protected].
PMID: 27719951 DOI: 10.1016/j.foodchem.2016.09.099
Abstract

A supercritical CO2 ultra-performance convergence chromatography (UPC2) system was utilized with a quadrupole time-of-flight mass spectrometry (Q-TOF MS) to examine the triacylglycerol compositions of sunflower, corn and soybean oils. UPC2 provided an excellent resolution and separation for the triacylglycerols, while the high performance Q-TOF MS system was able to provide the molecular weight and fragment ions information for triacylglycerol compound characterization. A total of 33 triacylglycerols were identified based on their elementary compositions and MS2 fragment ion profiles, and their levels in the three oils were estimated. The combination of UPC2 and Q-TOF MS may determine triacylglycerol compositions for oils and fats, and provide sn-position information for fatty acids, which may be important for food nutritional value and stability.

Keywords
Corn oil; Quadrupole time-of-flight mass spectrometry (Q-TOF MS); Soybean oil; Sunflower oil; Triacylglycerol; Ultra-performance convergence chromatography (UPC(2)).
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