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.
Antioxidant ability of various flavonoids against the free radical DPPH
DPPH: 1,1-diphenyl-2-pycrylhydrazyl, EGCG: epigallocatechin gallate. aRepresents the inhibition (%) of DPPH activity at the 30 µM concentration of each flavonoid. bRepresents the concentration of substrate that causes 50% loss of the DPPH activity.
