Multivariate statistical analysis of tobacco of different origin, grade and variety according to polyphenols and organic acids

作者：Xiang Gang^*; Yang Hongyan; Yang Liu; Zhang Xia; Cao Qiue; Miao Mingming

来源：Microchemical Journal, 2010, 95(2): 198-206.

DOI：10.1016/j.microc.2009.12.001

• Polyphenols
• Organic acids
• Tobacco
• Principal component analysis (PCA)
• Linear discriminant analysis (LDA)
• Ultra-performance liquid chromatography tandem mass spectrometry (UPLC/MSMS)

The aim of this work was to determine the concentration of polyphenols. organic acids in tobacco of different areas, grades and varieties by ultra-performance liquid chromatography tandem mass spectrometry (UPLC/MS/MS) and to achieve statistical classification by principal component analysis (PCA) and linear discriminant analysis (LDA) The obtained results revealed that tobacco of different varieties can be correctly classified according to the contents of polyphenols or organic acid The results of PCA showed that different grades and geographic regions cannot completely be discriminated using polyphenols or organic acid as independent variables. However, there were marked differences in special class from the same type or grade tobacco At the same time, the results of LDA also showed that the samples were correctly classified at 100% for different varieties of tobacco, but only 55 3% and 60% for different grades and areas, respectively These results demonstrate

• 出版日期2010-7
• 单位云南大学