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.
HPLC chromatographic profile of the medium polarity fraction from the extract of A. dauci at 96 h of culture. The chromatogram shows the peaks corresponding to α-acetylorcinol (1), p-hydroxybenzoic acid (2), and the diketopiperazines (3–9) at (a) 210 and (b) 257 nm.
