Compound Monograph
Theaflavin-3-gallate (TF3G)
Theaflavin-3-gallate is a monogalloylated theaflavin pigment from black tea.
Sources · 1
Where Does It Come From?
Theaflavin-3-gallate (TF3G) is a naturally occurring theaflavin (galloylated benzotropolone polyphenol), found in Tea. It is well tolerated orally (low toxicity).
Concentration
Content by Source
Concentrations not reported. No percent-dry-weight or mg/g figures have been published for this compound in its source plants.
Research & Evidence
Theaflavin-3-gallate (TF3G) is one of the galloylated theaflavins formed when tea catechins are oxidized during black-tea processing, carrying a single gallate group. It contributes, with the other theaflavins, to the color and antioxidant character of black tea and has been examined in laboratory studies. Structurally it is a benzotropolone polyphenol rather than a simple flavonoid.
Toxicity & Safety
As a constituent of ordinary black tea, TF3G is regarded as low in toxicity at the levels consumed in the diet.
