Discrimination capacity analysis of FTIR-PCA and EEM-PARAFAC on dandelion tissues extracts  

作　　者：Guoqing Li Hui Zou Yilun Chen 

机构地区：[1]College of Food Science and Engineering,Shandong Agricultural University,Key Laboratory of Food Processing Technology and Quality Control in Shandong Province,Taian 271018,China

出　　处：《Food Innovation and Advances》2023年第4期247-254,共8页食品创新与进展（英文）

基　　金：supported by funding:‘Innovation Project of Shandong Province Agricultural Application Technology',No 2130106.

摘　　要：Dandelion root contains triterpenoids,polyphenols and flavonoids,dandelion leaf is rich in polyphenols,flavonoids,flavonoids glycosides,and dandelion flower mainly contains flavonoids,among other substances.These different substance content leads to specific benefits and function effects of each part.Fourier transform infrared spectroscopy,three-dimensional fluorescence spectroscopy and related multivariate statistical methods are widely used to determine sample characteristics,but limited research focuses on the substance difference and characteristics in dandelion tissues.In this paper,Fourier transform infrared spectra-principal component analysis and three-dimensional fluorescence spectroscopy-parallel factor analysis were conveyed to analyze dandelion stem,leaf,root and flower tissue extracts,for determining the substance species and content difference among dandelion tissues and evaluating the discrimination capacity of these analysis methods.The Fourier transform infrared spectroscopy of root was distinct from others,and the two principal component models could distinguish dandelion stem and flower,but failed to differentiate leaf and root;while the excitation and emission matrix showed that stem and flower,leaf and root had similar intensity band distribution but different fluorescence intensity,and the parallel factor analysis results proved that one-and threecomponent models cannot differentiate the tissues of stem and flower,leaf and root,since the fluorescent compounds(polyphenol,flavonoid etc.)structure and content were similar in different tissues.These results indicated that Fourier transform infrared-principal component analysis might be a useful method when various fluorescent compounds exist.

关 键 词：analysis FLOWER excitation 

分 类 号：TS201[轻工技术与工程—食品科学]