Low Field-NMR Relaxation Characteristics of Glyceryl Oleate System

doi:10.11938/cjmr20172597

Abstract

Abstract: Low field-nuclear magnetic resonance (LF-NMR) relaxation characteristics of glyceride mixture can be used in rapid monitoring and product analysis of lipid remodeling processes. In this study, the LF-NMR relaxation properties of single or mixed glyceryl oleate with different esterification degrees were studied. The results indicated that three peaks appeared in the T₂ relaxation map of glyceryl oleate. With increasing esterification degree or temperature, both the single component and multi-component relaxation time increased, and the ratios of peak area changed as well. The higher the esterification degree was, the larger the relaxation time changed. For the binary or ternary mixed glyceryl oleate systems, with the glycerol trioleate (GTO) ratio increased to 40%, the single and multi-component relaxation time, the peak area proportion S₂₂ all increased, while the peak area proportion S₂₃ decreased. Principal components analysis (PCA) showed that the LF-NMR relaxation characteristics of ternary system had regular distribution on the score plot with changing GTO ratio and glycerol dioleate (GDO)/glycerol monooleate(GMO) ratio.

Key words: low field-nuclear magnetic resonance (LF-NMR), T₂ relaxation map, glyceryl oleate, esterification degree, mixed system

CLC Number:

O482.53

CHENG Shi, WANG Xin, LIU Bao-lin. Low Field-NMR Relaxation Characteristics of Glyceryl Oleate System[J]. Chinese Journal of Magnetic Resonance, 2018, 35(2): 243-254.

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