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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

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