appraising antioxidant and antibacterial activities of zinc oxide nanoparticles synthesized biologically by iraqi propolis

The biosynthesis of nanoparticles using natural products has recently attracted a lot of interest. the present study has investigated anti-biological activity of zinc oxide nanoparticles (znonps) synthesized biological by iraqi propolis extract. zno nps are well-known nanoparticles that are cost-effective, non-toxic and biocompatible. the antioxidant of znonps was determined by using the free radical 2,2–diphenyl-1-picrylhydrazylhydrate (dpph) assay, with different concentrations of the nps. the results exhibited that with scavenging activity, the highest scavenging at 400μl/ml reached 74.70%, compared with ascorbic acid, which was used as standard at the same concentration reaching 77.56% (p≤0.05). the evolution of ic50 was 164.31 to znonps compared with ascorbic acid ic50 =111.42. the antibacterial activity of the synthesized znonps was determined by using a disk diffusion assay. the results indicated effective antibacterial activity both in gram-negative and gram-positive bacteria in different concentration.