Article (Scientific journals)
Dynamic changes of key metabolites in Longjing green tea during processing revealed by widely targeted metabolomic profiling and sensory experiments
Zeng, Lin; Fu, Yan-Qing; Gao, Ying et al.
2024In Food Chemistry, p. 139373
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Keywords :
General Medicine; Food Science; Analytical Chemistry
Abstract :
[en] In this study, widely targeted metabolomics and chemometrics were utilized to comprehensively analyse the formation of taste compounds in Longjing green tea. A total of 580 non-volatile metabolites were identified by using ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry, and alterations in three metabolic pathways were investigated. Notably, the fixation process reduced phosphatidic acid levels, resulting in the formation of lyso-phosphatidylcholine and lyso-phosphatidylethanolamine, as well as the release of esterified polyunsaturated fatty acids. Baiye No.1 had high levels of L-glutamic acid and l-glutamine, while Longjing 43 showed elevated levels of flavones. Correlation analysis and sensory verification indicated that the specific concentration of L-leucine could decrease the umami of the tea. These findings advance our understanding of Longjing green tea quality improvement and cultivar development.
Disciplines :
Chemistry
Agriculture & agronomy
Author, co-author :
Zeng, Lin
Fu, Yan-Qing
Gao, Ying
Wang, Fang
Liang, Shuang
Yin, Jun-Feng
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > TERRA Research Centre > Chemistry for Sustainable Food and Environmental Systems (CSFES)
Ke, Lijing
Xu, Yong-Quan
Language :
English
Title :
Dynamic changes of key metabolites in Longjing green tea during processing revealed by widely targeted metabolomic profiling and sensory experiments
Publication date :
15 April 2024
Journal title :
Food Chemistry
ISSN :
0308-8146
eISSN :
1873-7072
Publisher :
Elsevier BV
Pages :
139373
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NSCF - National Natural Science Foundation of China [CN]
Available on ORBi :
since 16 April 2024

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