【作者】 顾小红； 康继； 汤坚；

【Author】 GU Xiao-hong~1 KANG Ji~(1,2) TANG Jian~1 1.State Key Laboratory of Food Science and Technology,Jiangnan University,Wuxi 214122,China 2.School of Food Science & Technology,Wuxi 214122,China

【机构】 食品科学与技术国家重点实验室,江南大学； 江南大学食品学院；

【摘要】 衰减全反射中红外光谱（ATR-MIR）技术与化学计量学相结合,用于研究葡萄酒中多酚含量的快速检测。通过光谱预处理技术和主成分分析方法,采用偏最小二乘法,建立了多酚含量的预测模型。校正集和检验集的预测值与实测值相关性良好,相关系数（r）分别为0.968 920,0.824 17,均方根误差分别为0.174 5,0.404 3 g·L^-1,表明该方法可用于葡萄酒多酚含量的快速测定。更多还原

【Abstract】 Attenuated total reflection MIR（ATR-MIR） spectroscopy combined with chemometries was investigated for the fast determination of polyphenols.After some preprocessing,partial least squares （PLS） analysis was implemented for calibration models of polyphenols content.The correlation coefficient between the predicted values and chemically determined values of cali- bration set and validation set was 0.991 78 and 0.824 17 respectively,the RMSE （Root Mean Square Error） was 0.174 5 and 0.404 3 g·L^-1 respectively.The overall results indicated that ATR-MIR spectroscopy combined with PLS could be applied as a fast way for the determination of polyphenols in wine.更多还原