波谱学杂志2018，Vol.35Issue(2)：243-254,12.DOI:10.11938/cjmr20172597
油酸甘油酯体系的低场核磁共振弛豫特性研究
Low Field-NMR Relaxation Characteristics of Glyceryl Oleate System
摘要
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 pea ks appeared in the T2relaxation 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 S22all increased, while the peak area proportion S23decreased. 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.关键词
低场核磁共振(LF-NMR)/T2弛豫图谱/油酸甘油酯/酯化度/混合体系Key words
low field-nuclear magnetic resonance (LF-NMR)/T2relaxation map/glyceryl oleate/esterification degree/mixed system分类
数理科学引用本文复制引用
成实,王欣,刘宝林..油酸甘油酯体系的低场核磁共振弛豫特性研究[J].波谱学杂志,2018,35(2):243-254,12.基金项目
国家自然科学基金项目(NSFC31201365) （NSFC31201365）
上海市科委重点攻关项目(11142200403) （11142200403）
上海市教委科研创新项目(11YZ109). （11YZ109）
