Figure 4.
Chemical structures of active polyphenols: 25 Theaflavin; 26 Theaphlavin monogallate A; 27 Theaphlavin monogallate B; 28 Theaphlavin digallate; 29 Epigallocathechin gallate.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.