基于激光拉曼光谱快速无损检测牛油果油的研究  

Study on Rapid Non-destructive Testing of Avocado Oil Based on Laser Raman Spectroscopy

作　　者：张凤娟[1] 黄敏 刘振方 ZHANG Fengjuan;HUANG Min;LIU Zhenfang(School of Internet of Things Technology, Wuxi Professional College of Science and Technology,Wuxi,Jiangsu 214028, China;Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Jiangnan University, Wuxi 214122, China)

机构地区：[1]无锡科技职业学院物联网技术学院,江苏无锡214028 [2]江南大学轻工业过程先进控制教育部重点实验室,江苏无锡214122

出　　处：《光散射学报》2020年第3期288-294,共7页The Journal of Light Scattering

基　　金：国家自然科学基金项目(61775086)。

摘　　要：本文利用便携式激光拉曼光谱仪分析比较了牛油果油、棕榈油、玉米油、芥花籽油、核桃油及亚麻籽油的原始拉曼光谱与归一化拉曼光谱,发现:牛油果油具有位于1115 cm^-1和1523 cm^-1处峰强较弱且独有的两个特征拉曼峰,而且牛油果的不饱和度参数值I1296/I1260比其他5种油高出很多。同时利用拉曼光谱对21份牛油果油实际样品进行检测,发现有1个样品拉曼光谱与牛油果原油拉曼光谱在特征峰强度及不饱和度参数值I1296/I1260等方面存在较大差别,被判定为疑似掺假样品。利用脂肪酸组成测试进一步验证该样品为掺伪品。实验结果显示便携式激光拉曼光谱仪可以用于快速无损鉴别牛油果油。In this paper,the original avocado oil and normalized Raman spectra of avocado oil,palm oil,corn oil,mustard seed oil,walnut oil and flax seed oil were compared by a portable laser Raman spectrometer.The results showed that:avocado oil has two characteristic Raman peaks with weak and unique peaks at 1115 cm^-1 and 1523 cm^-1,and the unsaturation parameter value I1296/I1260 of avocado oil is much higher than that of 5 other oils.Raman spectroscopy was also used to detect 21 kinds of avocado oil actual samples.It was found that there was one sample Raman spectroscopy and that there were big differences in characteristic peak intensity and unsaturation parameters,such as I1296/I1260,which may be incorporated into other cheap oils.Fatty acid composition test was used to further verify that the sample was adulterated.Experimental results found that:the portable laser Raman spectrometer could be used for the rapid identification of avocado oil.

关 键 词：牛油果油 拉曼光谱 特征拉曼峰 不饱和度参数 快速鉴别 

分 类 号：O433.4[机械工程—光学工程]