基于ASAP-TOF MS技术鉴别酱香型白酒中食用酒精掺伪方法的建立  

Identification of edible alcohol adulteration in sauce-flavor Baijiu based on ASAP-TOF MS technique

作　　者：张季 侯睿 张冰雪 陈艳 凌蕾 ZHANG Ji;HOU Rui;ZHANG Bingxue;CHEN Yan;LING Lei(Zunyi Institute of Product Quality Inspection and Testing,Zunyi 563099,China)

机构地区：[1]遵义市产品质量检验检测院,贵州遵义563099

出　　处：《中国酿造》2024年第7期233-237,共5页China Brewing

基　　金：贵州省科技计划项目(黔科合支撑[2023]一般386,黔科合支撑[2023]一般364);国家市场监督管理总局科技计划项目(2022MK117)。

摘　　要：该研究基于大气压固体分析探头(ASAP)-飞行时间质谱仪(TOF)建立了酱香型白酒中食用酒精掺伪样品(熟串、生勾)的鉴别方法,对样品采集条件进行优化,并运用主成分分析(PCA)结合线性判别分析(LDA)建立判别模型,对酒样的感官评价及模型识别结果进行比对。结果表明,优化检测条件为:电晕电压3 V;脱溶剂气温度500℃;探头温度600℃;脱溶剂气流速1100 L/h;锥孔电压30 V。在此条件下,酱香型白酒的信号响应值高且均匀稳定;生勾酒信号响应低且靠近基线;熟串酒的信号略低且不稳定。PCA结合LDA可有效区分不同酒样。该方法对酱香型白酒和酒精酒(熟串、生勾)的识别正确率分别为95%、97%,且与感官品评验证结果基本一致。Based on the atmospheric pressure solid state analysis probe(ASAP)-time-of-flight mass spectrometer(TOF),a method was established for the identification of the adulteration of edible alcohol(Shenggou and Shuchuan liquor)in sauce-flavor(Jiangxiangxing)Baijiu.The sample collection conditions were optimized,and the discriminant model was established by principal component analysis(PCA)combined with linear discriminant analysis(LDA).The results of sensory evaluation and model recognition of wine samples were compared.The results showed that the optimal test conditions were as follows:corona voltage 3 V;desolvent temperature 500℃;probe temperature 600℃;desolvent gas flow rate 1100 L/h;cone hole voltage 30 V.Under these conditions,the signal response value of sauce-flavor Baijiu was high,uniform and stable.The response signal of Shenggou Baijiu was low and close to the baseline.The response signal of Shuchuan Baijiu was slightly lower and unstable.PCA combined with LDA can effectively distinguish different liquor samples.This method showed that the identification correct rate of sauce-flavor Baijiu and alcoholic liquor(Shenggou and Shuchuan liquor)was 95%and 97%,respectively,and it was basically consistent with the verification result of sensory evaluation.

关 键 词：酱香型白酒 食用酒精 原位电离 高分辨质谱 掺伪鉴别 

分 类 号：O657.63[理学—分析化学] TS262.3[理学—化学]