白酒红外光谱“指纹特征”分析  

Analysis of Alcohol Fingerprint Features by FT-IR

作　　者：邓月娥[1] 孙素琴[2] 牛立元[1] 

机构地区：[1]河南科技学院化工系,河南新乡453003 [2]清华大学化学系,北京100084

出　　处：《河南科技学院学报》2006年第3期51-53,共3页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：科技部"十五"重大科技攻关(2002DEA20021-4)资助项目

摘　　要：首次采用傅里叶变换红外光谱技术研究了五粮液、极品五粮液、贵州茅台和泸州老窖四种白酒冷冻干燥物的红外指纹特征。一维谱图分析表明,五粮液在1727 cm-1附近有明显的酯羰基峰,含有较多的乳酸和酯类物质;泸州老窖在1599 cm-1附近有较强的(-氨基酸的-COO-不对称伸缩振动和-NH3+不对称弯曲振动峰,含有较多的氨基酸。五粮液在1601 cm-1附近的吸收峰明显强于贵州茅台的1592 cm-1附近的峰。在二维相关红外谱中,极品五粮液和五粮液在1470 cm-1附近都有1个较强的自相关峰,五粮液还有一个次强的自相关峰,说明五粮液干燥物中还含有一些热稳定性较差的物质。该方法可以快速、方便的区分不同种类、不同等级白酒干燥混合物组群结构的差异特征,对客观地评价白酒的品质提供了可靠的理论依据。The Fingerprint Features of four kinds of frozen - desiccated Alcohol was studied by Fourier Transform Infrared Spectroscopy （F FT- IR）. Wuliangye Alcohol contain lactic acid and ester, with apparent carbonyl peak at 1727 cm^- 1 ; Luzhoulaojiao Alcohol contain some kinds of amino acid, with stretching vibration of - COO - group in α - amino acid and bending vibration of -NH^3 ＋ at 1599 cm^ -1. In two -dimensional infrared correlation spectroscopy （2D -IR）, there is an obvious autopeak around 1470 cm^ - 1 for both Highest - grade - - Wuliangye Alcohol and Wuliangye Alcohol. In addition, the Wuliangye Alcohol shows an autopeak with lower intensity. This analytical method is fast and direct for evaluating the quality of Alcohol.

关 键 词：傅里叶变换红外光谱法 二维相关红外光谱 白酒 

分 类 号：O657.33[理学—分析化学]