Analysis of Molecular Species of Vegetable Oil Triglycerides by Capillary Column GC-MS

Capillary Column GC-MS에 의한 식물유 트리글리세리드 분자종의 분석

  • Yoon, Hyeung-Sik (Department of Food Science and Technology, National Fisheries University of Pusan) ;
  • Kim, Seon-Bong (Department of Food Science and Technology, National Fisheries University of Pusan) ;
  • Park, Yeung-Ho (Department of Food Science and Technology, National Fisheries University of Pusan)
  • 윤형식 (부산수산대학 식품공학과) ;
  • 김선봉 (부산수산대학 식품공학과) ;
  • 박영호 (부산수산대학 식품공학과)
  • Published : 1989.06.01

Abstract

Triglyceride molecular species In some vegetable oils were analyzed by capillary column gas chromatography and electron impact ionization mass spectrometry utilizing selected ion monitoring. Triglycerides were separated according to their molecular weights and their degrees of unsaturation on $25m{\times}0.25mm$ fused silica open tubular capillary column coated with a phenylmethylsilicone gum stationary phase and in an analysis time less than 13 min. Triglyceride molecular species were identified by analyzing the fragment ions having the same time on the selected ion monitoring profile . The major triglyceride molecular species in each oils were $C_{18:1}.\;C_{18:2}.\;C_{18:2}(OLL:18.3%),\;C_{18:2}.\;C_{18:2}.\;C_{18:2}(LLL;\;14.3%),\;C_{18:0}.\;C_{18:2}.\;C_{18:2}(SLL;\;14.1%),\;C_{16:0}.\;C_{18:2}.\;C_{18:2}(PLL;\;13.2%),\;C_{16:0}.\;C_{18:2}.\;C_{18:1}(PLO;\;11.6%)$ in corn oil, $C_{18:2}.\;C_{18:2}.\;C_{18:2}(LLL;\;18.0%),\;C_{18:1}.\;C_{18:2}.\;C_{18:2}(OLL;\;18.0%),\;C_{16:0}.\;C_{18:2}.\;C_{18:2}(PLL;\;17.1%)$ in safflower oil, $C_{16:0}.\;C_{18:2}.\;C_{18:2}(PLL;\;23.5%),\;C_{16:0}.\;C_{18:2}.\;C_{18:1}(PLO;\;13.8%),\;C_{18:0}.\;C_{18:1}.\;C_{18:1}(SOO;\;13.5%),\;C_{18:1}.\;C_{18:2}.\;C_{18:2}(OLL;\;10.6%)$ in cottonseed oil.

Keywords

triglycerides;molecular species;capillary column GC/MS;vegetable oils