Figure 1.
HPLC chromatograms of OPE and internal standard (quercetin). (A) The standard chromatogram of quercetin. (B) The chromatogram of OPE (0.5 mg/mL).
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.