Origin Identification of Yellow Wine Based on Gas Chromatography-Ion Mobility Spectrometry

In this study,gas chromatography-ion mobility spectrometry technology was used to analyze the volatile organic components of yellow wine with different origins,construct odor fingerprint of yellow wine,and discriminate and classify different origins of yellow wine based on differences in odor components. A total of 16 effective characteristic peaks were selected by the two-dimensional difference spectrometry method as the variables to characterize the differences in origins of yellow wine. After principle component analysis,the cumulative contribution rate of the first two principal components was 96.07%,yellow wine samples from different origins all had corresponding attribution areas in the principal component map and the principal component score combined with linear discriminate analysis were used to realize discriminant analysis. The results showed that linear discriminate analysis combined with principal component analysis could effectively distinguish yellow wine samples with different origins,and the accuracy rate of recognition was 94.44% in the prediction set. Gas chromatography-ion mobility spectrometry combined with chemometrics can quickly,accurately and intuitively distinguish yellow wine samples with different origins,which provides a new reference method for identification and origin protection of yellow wine.