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Proceedings Paper

Prediction of ethanol in bottled Chinese rice wine by NIR spectroscopy
Author(s): Yibin Ying; Haiyan Yu; Xingxiang Pan; Tao Lin
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Paper Abstract

To evaluate the applicability of non-invasive visible and near infrared (VIS-NIR) spectroscopy for determining ethanol concentration of Chinese rice wine in square brown glass bottle, transmission spectra of 100 bottled Chinese rice wine samples were collected in the spectral range of 350-1200 nm. Statistical equations were established between the reference data and VIS-NIR spectra by partial least squares (PLS) regression method. Performance of three kinds of mathematical treatment of spectra (original spectra, first derivative spectra and second derivative spectra) were also discussed. The PLS models of original spectra turned out better results, with higher correlation coefficient in calibration (Rcal) of 0.89, lower root mean standard error of calibration (RMSEC) of 0.165, and lower root mean standard error of cross validation (RMSECV) of 0.179. Using original spectra, PLS models for ethanol concentration prediction were developed. The Rcal and the correlation coefficient in validation (Rval) were 0.928 and 0.875, respectively; and the RMSEC and the root mean standard error of validation (RMSEP) were 0.135 (%, v v-1) and 0.177 (%, v v-1), respectively. The results demonstrated that VIS-NIR spectroscopy could be used to predict ethanol concentration in bottled Chinese rice wine.

Paper Details

Date Published: 27 October 2006
PDF: 9 pages
Proc. SPIE 6381, Optics for Natural Resources, Agriculture, and Foods, 638108 (27 October 2006); doi: 10.1117/12.685986
Show Author Affiliations
Yibin Ying, Zhejiang Univ. (China)
Haiyan Yu, Zhejiang Univ. (China)
Xingxiang Pan, Shaoxing Rice Wine Brewery (China)
Tao Lin, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6381:
Optics for Natural Resources, Agriculture, and Foods
Yud-Ren Chen; George E. Meyer; Shu-I Tu, Editor(s)

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