电子鼻结合化学计量法用于检测黄酒酒龄

黄酒的酒龄是其品质的主要标志之一。针对使用光谱仪、色谱仪等大型仪器检测黄酒受时间地点限制,试验采用表面声波型电子鼻zNose对4个年份的古越龙山黄酒样品进行采样分析,实现实时、实地的在线检测。结果表明,采用主成分分析法和典型判别分析进行数据分析,区分率达到100%。对黄酒样品不同特征峰进行回归分析,其中,用于鉴别不同酒龄的特征峰4面积、峰5面积、8个峰的面积总和与对应回归方程间的相关系数较好,相关系数分别为0.990 2,0.994 3,0.987 6,能够对所选的不同酒龄的古越龙山黄酒正确区分。研究结果显示:表面声波型电子鼻zNose结合化学计量方法适用于古越龙山黄酒酒龄鉴别。

Detection and classification of Chinese rice wine with different wine age by zNose

Wine age is one of the main indicators of Chinese rice wine in quality. There are many limits in time and place about chromatograph and spectrograph. Surface Acoustic Wave zNose can distinguish Chinese rice wine of different wine age real time, on-the-spot and on-line monitoring. GuYueLongShan Chinese rice wines which belong to different category were sampled. Data were analyzed by principal component analysis and discriminant function analysis, where 100% classification was achieved. The correlation coefficient of characteristic peak aera and regression equation were better, which were 0.990 2, 0.994 3, 0.987 6 respectively. The linear regression model could also distinguish different GuYueLongShan Chinese rice wine based on wine age. It could be concluded zNose combined with chemical analysis methods could be used for discriminating wine age of Chinese rice wine.