紫外-可见光谱传感对高温大曲白酒真实性的准确鉴别  

Accurate Identification of High-temperature Daqu Liquor by UV-Vis Sensor

作　　者：苏媛媛[1] 姜雪[1] 仓义鹏 朱艳美 向福双 陈亨业 付海燕[2] SU Yuan-yuan;JIANG Xue;CANG Yi-peng;ZHU Yan-mei;XIANG Fu-shuang;CHEN Heng-ye;FU Hai-yan(Suqian Product Quality Supervision and Testing Institute of Jiangsu Province,Suqian 223800,China;The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province,School of Pharmaceutical Sciences,South-Central Minzu University,Wuhan 430074,China)

机构地区：[1]江苏省宿迁市产品质量监督检验所,江苏宿迁223800 [2]中南民族大学药学院湖北省民族药物现代化工程技术研究中心,湖北武汉430074

出　　处：《化学试剂》2023年第10期8-13,共6页Chemical Reagents

基　　金：江苏省市场监督管理局科技计划项目(KJ2023077);国家自然科学基金资助项目(32001789,32122068,31972164)。

摘　　要：由于高温大曲白酒品质优良价格高昂,不法商贩常以高档酒瓶灌装同香型低档白酒以次充好。基于4种有机染料与风味化合物竞争配位锌离子的紫外-可见光谱结合偏最小二乘判别分析(PLS-DA)对高温大曲白酒的香型和品牌进行识别和分类。结果表明,风味化合物与锌离子的配位能力大于有机染料与锌离子的配合能力,使得光谱信号变化显著,同香型白酒鉴别的PLS-DA训练集和预测集准确率从原始光谱的98.63%和100%均提高到100%,且传感阵列的鉴别结果总体上是优于单传感点和原始光谱的。因此,基于有机染料与风味化合物竞争配位锌离子的紫外-可见传感方法可用于高温大曲白酒真实性的鉴别分析。Due to the excellent quality and high price of high-temperature Daqu liquor,unscrupulous traders often adulterate low-grade liquor of the same aroma with high-quality bottles.In this article,the UV-Vis spectral changes caused by the competition coordination of Zn^(2+)between the flavor compounds in liquor and four organic dyes were used in combination with the partial least squares discriminant analysis(PLS-DA).This method was used to identify and classify the aroma and brand of high temperature Daqu liquor.The results showed that the coordination ability of flavor compounds with Zn^(2+)was greater than that of organic dyes,resulting in significant changes in spectral signals.The accuracy of the training set and prediction set of PLS-DA for the same aroma type liquor increased from 98.63%and 100%of the original spectrum to 100%.The identification results of the sensor array were generally better than that of the single sensing point and the original spectrum.Therefore,the UV-Vis sensing method based on the competitive coordination of Zn 2+between organic dyes and flavor compounds could be used for the identification and analysis of high-temperature Daqu liquor.

关 键 词：风味化合物 有机染料 紫外-可见传感 高温大曲白酒 PLS-DA 

分 类 号：TS261.4[轻工技术与工程—发酵工程]