Figure 2.
Content of phenolic acids (as caffeic acid) mg·g−1 in raw material in successive years of the study.
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.