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

卷:218

Gao, Boyan ; Luo, Yinghua ; Lu, Weiying ; Liu, Jie ; Zhang, Yaqiong ; Yu, Liangli (Lucy)

Shanghai Jiao Tong Univ

关键词: Triacylglycerol;    Sunflower oil;    Corn oil;    Soybean oil;    Ultra-performance convergence chromatography (UPC2);    Quadrupole time-of-flight mass spectrometry (Q-TOF MS);   

DOI  :  10.1016/j.foodchem.2016.09.099

学科分类：食品科学和技术

【 摘 要 】

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. (C) 2016 Elsevier Ltd. All rights reserved.