Scheme 1.
Chemical structures of (A) alginate, (B) chitosan and (C) model of composted bio-waste substances.
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.