Influence of different fermentation raw materials on pyrolyzates of Pu-erh tea theabrownin by Curie-point pyrolysis-gas chromatography-mass spectroscopy

► TB mainly contains alkaloids, tea pigments, polysaccharides, proteins and lipids. ► The raw materials impact the chemical composition of TB. ► Black tea is not a suitable raw fermentation material for Pu-erh tea. ► CP-Py-GC/MS had effectively identified the TB extracted from different Pu-erh tea.