基于毛细管气相色谱法和主成分分析的白酒真假酒判别分析

运用毛细管气相色谱技术,选取18批不同批次的某品牌某一款白酒(本研究记为X型白酒)进行色谱分析,建立X型白酒的微量成分含量数据库,采用主成分分析(Principal Component Analysis,PCA)进行建模,然后将市面上查处的X型白酒假酒在同等条件下进行色谱分析,将假酒的微量成分数据导入PCA模型,实现X...

Discriminant Analysis for Chinese Spirits Authenticity Based on Capillary Gas Chromatography and Principal Component Analysis

Using capillary gas chromatography, 18 batches of a certain brand of liquor(in this study recorded as type X liquor) from different batches were selected for chromatographic analysis, and a database of trace contents of type X liquor was established. Chromatographic analysis was carried out under the same conditions, and the data of trace components of the counterfeit liquor were introduced into the PCA model to enable the analysis of Type X liquor for identification of genuine counterfeit liquor. Partial Least Squares-Discriminant Analysis(PLS-DA) was used to distinguish the different components between the real and fake spirits. At the same time, the randomly coded samples were evaluated by sensory evaluation, and the results of the X-type liquor discriminant analysis were verified by drawing sensory flavour profiles. The method can be used to effectively carry out the analysis of Type X spirits and can also be used to identify other types of spirits.