Nontargeted UHPLC–MS for the Study of the Diversity of Flavonoid Glycosides in Different Fermented Teas

Although black tea and dark tea are both fermented teas, their fermentation processes are varied a lot and strongly affect their chemical components. The flavonoids which are the major active compounds in teas play an important role in their refreshing effect and health benefit. The differential flavonoid glycosides in these two fermented teas were investigated using nontargeted modification-specific metabolomics UHPLC–MS method. Principal...