摘要
选取4种不同配方培养的人工窖泥为样品,采用气相色谱法对其中14种有机酸进行了定量分析,并对有机酸含量进行相关性分析和主成分分析。结果表明,人工窖泥中有机酸之间存在显著相关性;前2个主成分有机酸反映总有机酸98.526%的信息,2号窖泥有机酸综合得分最高,说明是4种人工窖泥中的最优窖泥。该结果与感官鉴定结果相符,说明以有机酸含量为指标进行主成分分析对于快速判别人工窖泥质量优劣具有实际意义。
Four kinds of man-made pit mud cultured by different formulas were selected as the research objects in this experiment. Quantitative analysis of 14 organic acids was performed by using GC. Then correlation analysis and principal components analysis （PCA） among organic ac- ids were made. The results showed that, there were significant correlations among organic acids in man-made pit mud, the first 2 principal or- ganic acids contained 98.526 % information of total organic acids, the comprehensive score about organic acids of No.2 pit mud sample was the highest （suggesting it was the best pit mud among the four pit mud samples） and it was consistent with the results of sensory evaluation. This study proved that PCA with organic acid content as the indicators could rapidly identify the quality of pit mud.
出处
《酿酒科技》
2016年第8期65-67,共3页
Liquor-Making Science & Technology
基金
四川省科技厅基金[2015ZR0181]
关键词
有机酸
气相色谱
主成分分析
白酒
organic acid
gas chromatography
principal components analysis
Baijiu
