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 chromatograms of S. alata leaf extract analyzed under condition A (A), condition B (B) and condition C (C) and with extract spiked with rhein analyzed under condition C (D) and standard rhein analyzed under condition C (E) with a 254 nm detection wavelength.
