长波近红外光谱-偏最小二乘法快速分析白酒中乙醇含量  

Rapid Determination of Alcohol Content in Distilled Spirits Using Long Wave NIRS With PLS Regression Method

作　　者：吴凌[1] 刘佳音[1] 郭伟良[1] 陈淑彦[1] 任晓东[1] 

机构地区：[1]吉林大学生命科学学院,长春市130012

出　　处：《酿酒》2007年第4期77-79,共3页Liquor Making

基　　金：吉林大学大学生科技创新基金(批准号:20061118)

摘　　要：研究近红外光谱结合偏最小二乘法(NIRS-PLS)快速测定白酒中的乙醇含量的可行性,应用NIRS-PLS所建的模型相关系数达到0.99991,校正均方根误差(RMSEC)为0.00181,通过交互验证得出交互验证均方根误差(RMSECV)为0.00296,预测参差平方和(PRESS)为0.00016。用模型对预测集和白酒样品进行预测,预测均方根误差(RMSEP)为0.00258,结果表明NIRS-PLS可用于白酒生产中的在线质量监控和白酒市场的快速质量检测。This paper has studied the feasibility of quick determination of alcohol content in Distilled Spirits using long wave near infrared spectroscopy with partial least squares （NIRS-PLS） method. A calibration model is developed by NIRS-PLS. The regression coefficient （R） of this model is 0.99991. The root mean square error of calibration （RMSEC） is 0.00181. The root mean square error of prediction （RMSEP） is 0.00137.This model has been verified by cross-validation. The root mean square error of cross-validation （RMSECV） is 0.00296. The predicted residual error sum of squares （PRESS） is 0.00016. We predicted alcohol content in the validation and Distilled Spirits purchased from the market by this model. The results show that NIRS-PLS can reach the accuracy degree which is required in the production of Dis tilled Spirits.

关 键 词：近红外光谱法 偏最小二乘法 白酒 含量测定 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS207.3[轻工技术与工程—食品科学与工程]