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; Wang, Fang; Liang, Shuang; Yin, Jun-Feng; Fauconnier, Marie-Laure; Ke, Lijing; Xu, Yong-Quan

doi:10.1016/j.foodchem.2024.139373

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.

2024 • In Food Chemistry, p. 139373

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/316287

DOI
10.1016/j.foodchem.2024.139373

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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

Additional URL :

https://api.elsevier.com/content/article/PII:S0308814624010227?httpAccept=text/xml

Funders :

NSCF - National Natural Science Foundation of China

Available on ORBi :

since 16 April 2024

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