Fig. 1From: Origanum vulgare L. extract-mediated synthesis of silver nanoparticles, their characterization and antibacterial activitiesDPPH-free radical scavenging activity of O. vulgare extracts (OV 1, OV 2, OV 3 and OV 4) and catechin. The results are expressed in terms of IC50 values indicating the concentrations required to scavenge 50% of the free radicalsBack to article page