• Spectroscopy and Spectral Analysis
  • Vol. 34, Issue 7, 1826 (2014)
ZHANG Chu*, LIU Fei, KONG Wen-wen, and HE Yong
Author Affiliations
  • [in Chinese]
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    DOI: 10.3964/j.issn.1000-0593(2014)07-1826-05 Cite this Article
    ZHANG Chu, LIU Fei, KONG Wen-wen, HE Yong. Application of Near-Infrared Spectroscopy to Distinguish Brands of Soy Milk Powder and Fake Soy Milk Powder[J]. Spectroscopy and Spectral Analysis, 2014, 34(7): 1826 Copy Citation Text show less

    Abstract

    Near-infrared spectroscopy combined with chemometrics was used to investigate the feasibility of identifying different brands of soymilk powder and the counterfeit soymilk powder products. For this purpose, partial least squares-discriminant analysis (PLS-DA), linear discriminant analysis (LDA) and back-propagation neural network (BPNN) were employed as pattern recognition methods to class ify soymilk powder samples. The performances of different pretreatments of raw spectra were also compared by PLS-DA. PLS-DA models based on De-trending and multiplicative scatter correction (MSC)combined with De-trending(MSC+De-trending) spectra obtained best results with 100% prediction accuracy, respectively. Six and seven optimal wavenumbers selected by x-loading weights of the best two PLS-DA models were used to build LDA and BPNN models. Results showed that BPNN performed best and correctly classified 100% of the soymilk powder samples for both the calibration and the prediction set. The overall results indicated that NIR spectroscopy could accurately identify branded and counterfeit soymilk powder products.
    ZHANG Chu, LIU Fei, KONG Wen-wen, HE Yong. Application of Near-Infrared Spectroscopy to Distinguish Brands of Soy Milk Powder and Fake Soy Milk Powder[J]. Spectroscopy and Spectral Analysis, 2014, 34(7): 1826
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