Effects of fructus forsythiae extracts on scavenging oxygen free radical and aliphatic free radical

The scavenging ability of fructus forsythiae ethanol extracts on R·,OH· and O2-· was evaluated by means of photometric method,using BHA as control sample.And the relationship between inhibitory behavior to free radical and extracts concentration and time was also investigated and compared.Experimental results demonstrated that fructus forsythiae ethanol extracts could scavenge R· and inhibit oil oxidization significantly,and it could also scavenge OH· and O2-· efficiently,and the scavenging content 50%(EC50) of extracts was about 1.2 mg/mL and 100 μg/mL respectively.Under parallel experimental conditions the antioxidative ability of fructus forsythiae extracts is better than that of BHA,and fructus forsythiae extracts could be developed as a natural effective antioxidant.