Theaflavin-3′-gallate, a theaflavin derivative, is phytochemicals of Flavan-3-ols, in the group of Flavonoids (polyphenols) found abundantly in black tea. Health benefits 1. Antioxidant capacities In the comparison of TF derivatives (theaflavin (TF(1)), theaflavin-3-gallate (TF(2)A), theaflavin-3′-gallate (TF(2)B), and theaflavin-3,3′-digallate (TF(3))) in scavenging reactive oxygen species (ROS) in vitro, indicated that positive antioxidant capacities of TF(2)B on …