Catechins are the most important class of secondary metabolites with high content and non-volatile biological activity in tea tree. Creative Proteomics offers an ultra-high performance liquid chromatography-mass spectrometry tandem (UPLC-MS/MS) detection platform for the identification and accurate quantitative analysis of catechins.	catechins in tea chemistry and analysis	https://metabolomics.creative-proteomics.com/catechin-analysis-service.htm