摘要
采用中红外(MIR)光谱技术(包括:一维MIR光谱、二阶导数MIR光谱、四阶导数MIR光谱和退卷积MIR光谱)分别开展了香油结构的研究.实验发现,香油结构的主要红外吸收模式包括:CH3官能团不对称伸缩振动模式(vasCH3-香油)、CH2官能团不对称伸缩振动模式(vasCH2-香油)、CH3官能团对称伸缩振动模式(vsCH3-香油)、CH2官能团对称伸缩振动模式(p sCH2-香油)、C=O官能团伸缩振动模式(vC=O-香油)、蛋白质结构酰胺Ⅰ带模式(vamide-Ⅰ-香)、C=C官能团伸缩振动模式(vC=C-香油)、蛋白质结构酰胺Ⅱ带模式(vamide-Ⅱ-香油)、CH2官能团变角振动模式(δCH2-香油)、CH3官能团不对称变角振动模式(δasCH3-香油)、CH3官能团对称变角振动模式C-O官能团伸缩振动模式(vC-O香油)和CH2官能团面内摇摆振动模式(ρCH2-香油).研究发现,香油的主要成分是油脂、蛋白质及多糖.为香油结构研究建立一个方法学,具有重要的应用研究价值.
Abstract
The structure of sesame oil was studied using mid infrared(MIR)spectroscopy techniques(including one-dimensional MIR spectroscopy,second-order derivative MIR spectroscopy,fourth-order derivative MIR spectroscopy,and deconvolution MIR spectroscopy).The experiment found that the main infrared absorption modes of sesame oil structure include CH3 functional group asymmetric stretching vibration mode(vasCH3-sesame oil),CH2 functional group asymmetric stretching vibration mode(vasCH23-sesame oil),CH3 functional group symmetric stretching vibration mode(vsCH3-sesame oil),CH2 functional group symmetric stretching vibration mode(vsCH2-sesame oil),C=O functional group stretching vibration mode(vC=O-sesame oil),protein structure amide I band mode(v Amide-Ⅰ-sesame oil),C=Cfunctional group stretching vibration mode(vC=C-sesame oil),protein structure amide Ⅱ band mode(vAmide-Ⅱ-sesame oil),CH2 functional group bending vibration mode(δCH2-sesame oil),CH3 functional group asymmetric bending vibration mode(δasCH3-sesame oil),CH3 functional group symmetric bending vibration mode(δsCH3-sesame oil),C-O functional group stretching vibration mode(vC-O-sesame oil)andCH2functional group rocking vibration mode(pCH2-sesame oil).Research has found that the main components of sesame oil are fats,proteins,and polysaccharides.This study establishes a methodology for the identification of the structure of sesame oil,which has important application research value.
基金项目
石家庄市麻醉药技术创新中心项目(石科[2019]34号)
河北省生物制药国际联合中心项目(冀科外函[2022]3号)
万方数据