Identification of Maotai-flavor Baijiu with different brands based on ICP-MS and chemometrics

  • ZHUO Junna ,
  • WU Weiyu ,
  • HE Shuang ,
  • ZHAO Jinsong
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  • 1(College of Bioengineering of Sichuan University of Science & Engineering,Yibin 644000,China)
    2(Sichuan National Inspection and Testing Co.Ltd.,Luzhou 646000,China)
    3(Sichuan Liquor Group,Luzhou,Sichuan 646500,China)

Received date: 2021-08-30

  Revised date: 2021-10-30

  Online published: 2022-04-27

Abstract

Inductively coupled plasma mass spectrometry was employed to rapidly classify and identify different brands of Maotai-flavor Baijiu. The dimensional differences between the elements were eliminated by z-score standardization, and then principal component analysis (PCA), cluster analysis (CA) and partial least squares discriminant analysis (PLS-DA) were performed. A verification model, established by PLS-DA combined with variable importance projection, was used. The results showed that CA, PCA and PLS-DA had effectively discrimination ability of different brands, and PLS-DA was the best. Na, Ca, Al and K were the main inorganic elements that caused the difference of Maotai-flavor Baijiu. Validation Baijiu samples and experimental Baijiu samples could also be well classified. In summary, the identification methods of Maotai-flavor Baijiu based on ICP-MS and appropriate chemometric methods can provide theoretical support for the traceability and authenticity of Baijiu.

Cite this article

ZHUO Junna , WU Weiyu , HE Shuang , ZHAO Jinsong . Identification of Maotai-flavor Baijiu with different brands based on ICP-MS and chemometrics[J]. Food and Fermentation Industries, 2022 , 48(7) : 269 -275 . DOI: 10.13995/j.cnki.11-1802/ts.029213

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