UM
UPLC-Orbitrap-MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins
Xin, Zhongquan; Ma, Shasha; Ren, Dabing; Liu, Wenbin; Han, Binsong; Zhang, Yi; Xiao, Jianbo; Yi, Lunzhao; Deng, Baichuan
2018-11-15
Conference NameFOOD CHEMISTRY
Volume266
Pages534-544
Publication PlaceTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
PublisherELSEVIER SCI LTD
AbstractMulti-components of green tea from different origins were identified by UPLC-Orbitrap-MS/MS, including alkaloids, amino acids, catechins, flavones, flavone glycosides, phenolic acids and theaflavins. Quantitative chemical profiles of 72 samples of Yunnan green tea (YGT) and Hunan green tea (HGT) established the influence of origin on green tea. In addition, three variable selection methods, based on partial least squares-discriminant analysis (PLS-DA), were employed to screen characteristic components of YGT and HGT. The results of variable importance on projection (VIP) method showed better performance than coefficients beta and the least absolute shrinkage and selection operator (LASSO) for this dataset. Three characteristic components, named, gallocatechin gallate (GCG), epicatechin-(4 beta -> 8)-epigallocatechin-3-O-gallate, and vitexin were selected by VIP, with a correct rate of 98.61% and an AUC value of 0.9706. The results indicated that the combination of UPLC-Orbitrap-MS/MS and chemometrics could serve as a valid strategy to analyze complex analytical objects, such as green tea.
KeywordGreen tea UPLC-Orbitrap-MS/MS Quantitative chemical profile Chemometrics
DOI10.1016/j.foodchem.2018.06.056
URLView the original
Indexed BySCI ; CPCI
Language英语
WOS Research AreaChemistry ; Food Science & Technology ; Nutrition & Dietetics
WOS SubjectChemistry, Applied ; Food Science & Technology ; Nutrition & Dietetics
WOS IDWOS:000437262900066
The Source to ArticleWOS
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionUniversity of Macau
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Xin, Zhongquan,Ma, Shasha,Ren, Dabing,et al. UPLC-Orbitrap-MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins[C]. THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND:ELSEVIER SCI LTD,2018:534-544.
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