In recent years,there have been several cases of fake Moutai-flavor liquor(mainly Moutai),which has seriously disrupted the market economic order,so it is of great significance to realize the identification of fake Moutai-flavor liquor.In this study,the gas chromatography-mass spectrometry(GC-MS)technology coupled with chemometrics was established to identify shoddy products and case combinations.Principal component analysis(PCA)was used to identify the Moutai-flavor liquor samples from different sources.Chemical markers,contributing to authentication,were screened by the partial least squares-discriminant analysis(PLS-DA)and heatmap visualization.This study shows that GC-MS coupled with chemometrics has great potential in source tracing and case linking,thus providing technical support for combating the crime of fake Moutai-flavor liquor cases.
关键词
理化检验/酱香型白酒/气相色谱-质谱/化学计量学/化学标志物/源头追溯
Key words
physical and chemical test/Moutai-flavor liquor/gas chromatography-mass spectrometry(GC-MS)/chemometrics/chemical markers/source tracing
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