کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5134095 | 1492074 | 2017 | 6 صفحه PDF | دانلود رایگان |
- UPC2-Q-TOF MS technology was utilized to analyze the TAGs in commercial vegetable oils.
- A total of 30, 29 and 30 different TAGs were identified in the sunflower, corn and soybean oil samples, respectively.
- The sn-position for each TAGs was determined based on high resolution MS and MS fragment information.
- This technology provides an environmental friendly method for rapid analysis of TAGs profile and composition of oil/fat.
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.
Journal: Food Chemistry - Volume 218, 1 March 2017, Pages 569-574