Characterization of white tea metabolome: Comparison against green and black tea by a nontargeted metabolomics approach.

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ID: 75890
2017
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Abstract
White tea is considered the least processed form of tea and is reported to have a series of potent bioactivities, such as antioxidant, anti-inflammatory, anti-mutagenic, and anti-cancer activities. However, the chemical composition of white tea and the dynamic changes of the metabolites during the manufacturing process are far from clear. In this study, we applied a nontargeted metabolomics approach based on ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF/MS) to comprehensively profile the characteristic metabolites of white tea. There were significant differences in the content of amino acids, catechins, dimeric catechins, flavonol and flavone glycosides, and aroma precursors in white tea compared with green and black teas that were manufactured from the same fresh tea leaves. Furthermore, the dynamic changes of the metabolites in the tea samples with various withering durations of 0, 4, 8, 12, 16, 20, 24, 28, and 36 h were also profiled. This study offers a comprehensive characterization of the metabolites and their changes in white tea.
Reference Key
dai2017characterizationfood Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dai, Weidong;Xie, Dongchao;Lu, Meiling;Li, Pengliang;Lv, Haipeng;Yang, Chen;Peng, Qunhua;Zhu, Yin;Guo, Li;Zhang, Yue;Tan, Junfeng;Lin, Zhi;
Journal food research international (ottawa, ont)
Year 2017
DOI
S0963-9969(17)30102-3
URL
Keywords
metabolomics lc-ms quercetin (pubchem cid: 5280343) withering apigenin (pubchem cid: 5280443) caffeine (pubchem cid: 2519) catechin (pubchem cid: 73160) dynamic change epigallocatechin gallate (pubchem cid: 65064) glutamic acid (pubchem cid: 33032) kaempferol (pubchem cid: 5280863) myricetin (pubchem cid: 5281672) theaflavin (pubchem cid: 114777) theanine (pubchem cid: 439378) white tea

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