Rapid determination of flavonoids in green tea by synchronous fluorescence spectra coupled with chemometrics
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论文类型：期刊论文
发表时间：2017-01-01
发表刊物：SPECTROSCOPY LETTERS
收录刊物：SCIE、Scopus
卷号：50
期号：9
页面范围：501-506
ISSN号：0038-7010
关键字：Chemometrics; flavonoids; interval partial least square; successive projection algorithms; synchronous fluorescence spectra
摘要：Flavonoids are one of the most important antioxidant compounds of tea. It is necessary to determine flavonoid concentration of tea infusions and to understand how the storage condition and tea brewing processing impact on flavonoid content. The aim of this study is to analyze flavonoids' properties and predict flavonoid concentration using synchronous fluorescence spectra coupled with chemometrics. Different wavelength intervals were measured to develop an optimal model. Successive projection algorithms and interval partial least square regression were applied to extract informative wavelengths. The optimal interval partial least square regression model was obtained with the determination coefficient of calibration of 0.95, determination coefficient of cross-validation of 0.90.
发表时间：2017-01-01