摘要
采用红外光谱技术(一维红外光谱、二阶导数红外光谱和四阶导数红外光谱)分别研究了8种食用植物油脂(葡萄籽油、山茶油、稻米油、小麦胚油、杏仁油、亚麻籽油、葵花籽油和玉米油)的结构。实验发现,8种食用植物油脂同时存在着CH3不对称伸缩振动方式(vasCH3-plant edible oils)、CH3对称伸缩振动方式(vsCH3-plant edible oils)、CH3对称弯曲振动方式(δsCH3-plant edible oils)、CH2不对称伸缩振动方式(vasCH2-plant edible oils)、CH2对称伸缩振动方式(vsCH2-plant edible oils)、CH2弯曲振动方式(δCH2-plant edible oils)、CH2平面摇摆振动方式(ρCH2-plant edible oils),C=O伸缩振动方式(VC=O-plant edible oils)、C-O-C伸缩振动方式(V C-O-C-plant edible oils)等。研究发现,采用四阶导数红外光谱对于食用植物油脂的鉴别能力要优于相应的一维及二阶导数红外光谱。本项研究拓展了红外光谱技术在食用植物油脂鉴别的应用范围。
The eight kind of plant edible oils(grape seed oil,camellia oil,rice germ oil,wheat germ oil,almond oil,linseed oil,sunflower oil and corn oil)structure had been studied by infrared spectroscopy(one-dimensional infrared spectroscopy,second derivative infrared spectroscopy and fourth derivative infrared spectroscopy).The CH3 asymmetrical stretching vibration(vasCH2-plant edible oils),CH3 symmetrical stretching vibration(vsCH3-plant edible oils) CH3 symmetrical scissoring bond vibration(δsCH2-plant edible oils),CH2 asymmetrical stretching vibration(vasCH2-plant edible oils),CH2 symmetrical stretching vibration(vsCH2-plant edible oils),CH2 scissoring bond vibration(δCH2-plant edible oils),CH2 rocking vibration(ρCH2-plant edible oils),C=O stretch vibration(vc=O-plant edible oils),C-O-C stretch vibration(vC-O-C-plant edible oils)were found also.The eight kind of plant edible oils can be distinguished better by fourth derivative infrared spectroscopy than one-dimensional infrared spectroscopy and second derivative infrared spectroscopy.The study demon strates the key roles of infrared spectroscopy in the analysis ofplant edible oils.
作者
周泊希
李玉贤
于佳杞
李金
赵子豪
赵佳
张媛媛
肖霄
于宏伟
Zhou Boxi;Li Yuxian;Yu Jiaqi;Li Jin;Zhao Zihao;Zhao Jia;Zhang Yuanyuan;Xiaoxiao;Yu Hongwei(School of Chemical Engineering, Shyiazhuang Unwersity, Shijiazhuang 050035, China;Hebei Yipin Pharmaceutical Corporation Ltd., Shijiazhuang 052165, China)
出处
《煤炭与化工》
CAS
2019年第6期143-148,154,共7页
Coal and Chemical Industry
基金
石家庄市麻醉药技术创新中心自研项目(201901)
2019年石家庄学院大学生创新创业训练计划立项项目(SCXM2019014)
关键词
食用植物油脂
一维中红外光谱
二阶导数红外光谱
四阶导数中红外光谱
plant edible oils
one-dimensional infrared spectroscopy
second derivative infrared spectroscopy
fourth derivative infrared spectroscopy
