食品科学

• 分析检测 • 上一篇    下一篇

采用便携式拉曼光谱仪测定白酒中乙醇含量

吕慧英,李高阳,范 伟,刘咏红,单 杨   

  1. 1.湖南省农业科学院,湖南省农产品加工研究所,湖南 长沙 410125;
    2.湖南省食品测试分析中心,湖南 长沙 410125;3.中南大学化学化工学院,湖南 长沙 410083
  • 出版日期:2013-12-25 发布日期:2014-01-03

Determination of Alcohol Content in White Wine by Using Portable Raman Spectrometer

LÜ Hui-ying,LI Gao-yang,FAN Wei,LIU Yong-hong,SHAN Yang   

  1. 1. Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China;
    2. Hunan Food Test and Analysis Center, Changsha 410125, China;
    3. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
  • Online:2013-12-25 Published:2014-01-03

摘要:

采用便携式拉曼光谱仪对白酒中的乙醇含量进行直接测定,比较采用单波数、单峰区间和多个特征峰区间的不同模型预测结果。结果表明,采用800~1150cm-1区间建立模型预测结果最佳。校正均方根误差(RMSEC)为0.4537,预测均方根误差(RMSEP)为0.5575。采用便携式拉曼光谱仪可以实现白酒中乙醇含量的快速无损测定。

关键词: 拉曼光谱, 白酒, 乙醇含量, 特征光谱区间

Abstract:

In this work, Raman spectroscopy was used to determine the content of alcohol in white wine. Different models were
established based on single variable, single peak region or several peak regions. The results indicated that the model established
based on 800–1150 cm-1 region was the best one. The RMSEC (root mean square error of calibration) and RMSEP (root mean
square error of prediction) was 0.4537 and 0.5575, respectively. These results showed that a quick and non-destructive approach to
the determination of alcohol content in white wine could be realized by using portable Raman spectrometer.

Key words: Raman spectroscopy, white wine, alcohol content, key spectral region