Application of Fluorescence Spectra and Parallel Factor Analysis to the Discrimination between Sesame Oil and Sesame Essence
WU Xi-jun1,TIAN Rui-ling2,DU De-qin1
1. Measurement Technology and Instrumentation Key Lab of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China
2. School of Science, Yanshan University, Qinhuangdao, Hebei 066004, China
Abstract The fluorescence spectra of twenty-one sesame oil samples and two sesame essence samples are measured with FS920 fluorescence spectrometer. Parallel factor analysis (PARAFAC) is applied to resolve excitation-emission fluorescence matrices (EEM). The factor-number and constituents corresponding to each factor are ascertained. The map feature (peak position, peak value and peak number) are obtained by analyzing synchronous fluorescence spectra of three-dimensional, three-dimensional excitation-emission fluorescence spectra and contour maps. The three-factor excitation and emission profiles and factor relative content plots of PARAFAC model are plotted. These results indicate the capability of the combination of fluorescence spectra techniques and three-factor PARAFAC model to differentiate sesame oils and sesame essence.
WU Xi-jun,TIAN Rui-ling,DU De-qin. Application of Fluorescence Spectra and Parallel Factor Analysis to the Discrimination between Sesame Oil and Sesame Essence[J]. Acta Metrologica Sinica, 2016, 37(6): 657-662.
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2016, Vol. 37 
