指纹图谱结合化学模式分析小曲清香型白酒质量控制的研究

Study on the Quality Control of Light-flavor Baijiu Made With Xiaoqu Based on Fingerprinting Combined With Multi-component Chemical Pattern Analysis

通过分析白酒中挥发性风味物质,建立指纹图谱并结合化学模式识别技术对不同等级的白酒进行分类和鉴别。方法:采用顶空固相微萃取结合气相色谱-质谱联用技术分析小曲清香型白酒的风味物质,建立指纹图谱并进行相似度评价,进一步通过层次聚类分析和正交偏最小二乘法-判别分析从对不同等级的白酒进行分类和鉴别。结果:小曲清香型白酒挥发性化合物指纹图谱、判别分析和聚类分析可以较好地区分、判别不同等级小曲清香型白酒,三种方法的鉴定结果相互印证与补充。结论:指纹图谱结合多成分化学模式分析方法可用于白酒产品质量评价,同样适用于不同品牌、不同香型白酒以及白酒真假酒的鉴别。为中国白酒质量评价与分级提供了的理论依据与技术思路。

Base on the analysis results of the volatile compounds in light-flavor Baijiu made with Xiaoqu,the fingerprint profiles were established and combined with chemical pattern recognition techniques to classify and identify thr different grades of light-flavor Baijiu made with Xiaoqu.METHODS:Headspace solid-phase microextraction(HS-SPME)combined with gas chromatography-mass spectrometry(GC-MS)was used to analyze the flavor compounds in light-flavor Baijiu made with Xiaoqu,then established fingerprint profiles and evaluate the similarity,and further classify and identify different grades of Baijiu by hierarchical cluster analysis and orthogonal partial least squares(OLS)-discriminant analysis.RESULTS:Fingerprint mapping,discriminant analysis,and cluster analysis of volatile compounds can distinguish and identify different grades of light-flavor Baijiu made with Xiaoqu,and the identification results of the three methods corroborate and complement each other.Conclusion:Fingerprint mapping combined with multi-component chemical pattern analysis can be used for the product quality evaluation of China liquors,which is also applicable to the identification of different brands and aromatic liquors as well as real and fake liquors.This study provides a theoretical basis and technical ideas for the quality evaluation and grading of Chinese liquors.