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.
The effect of water mineralization on the extraction of active substances from leaves of peppermint. Data are shown as mean ± SD. Different letters (a, b, c, etc.) show a significant difference with p < 0.05. The differences relate to each group of compounds separately.
