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UPLC–Orbitrap–MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins
Xin Z.3; Ma S.3; Ren D.3; Liu W.3; Han B.3; Zhang Y.1; Xiao J.4; Yi L.3; Deng B.2
2018-11-15
Source PublicationFood Chemistry
ISSN18737072 03088146
Volume266Pages:534-544
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 β and the least absolute shrinkage and selection operator (LASSO) for this dataset. Three characteristic components, named, gallocatechin gallate (GCG), epicatechin-(4β → 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.
Keyword1,4,6-Trigalloyl-β-D-glucopyranose (PubChem CID: 14284610) Chemometrics Epicatechin gallate (PubChem CID: 107905) Gallocatechin gallate (PubChem CID: 199472) Green tea Kaempferol 3-O-glucoside (PubChem CID: 5282102) Quantitative chemical profile Theaflavin (PubChem CID: 114777) Theaflavin 3,3′-digallate (PubChem CID: 58252602) Theaflavin 3-gallate (PubChem CID: 102115506) Theaflavin 3′-gallate (PubChem CID: 467321) Tryptophan (PubChem CID: 6305) UPLC–Orbitrap–MS/MS Vitexin (PubChem CID: 5280441)
DOI10.1016/j.foodchem.2018.06.056
URLView the original
Language英語
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Central South University China
2.South China Agricultural University
3.Kunming University of Science and Technology
4.Universidade de Macau
Recommended Citation
GB/T 7714
Xin Z.,Ma S.,Ren D.,et al. UPLC–Orbitrap–MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins[J]. Food Chemistry,2018,266:534-544.
APA Xin Z..,Ma S..,Ren D..,Liu W..,Han B..,...&Deng B..(2018).UPLC–Orbitrap–MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins.Food Chemistry,266,534-544.
MLA Xin Z.,et al."UPLC–Orbitrap–MS/MS combined with chemometrics establishes variations in chemical components in green tea from Yunnan and Hunan origins".Food Chemistry 266(2018):534-544.
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