Figure 2.
Structures of flavan-3-ol monomers composed the proanthocyanidins from S. adstringens aqueous extract (SAAE), a typical condensed tannin B-type and some chemical compounds that were identified.
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.