Antibacterial Studies of Gamma Irradiated Zinc Oxide Nanoparticles on Klebsiella pneumonia and Pseudomonas aeruginosa

In this study, evaluation of antibacterial activity of zinc oxide (ZnO) nanoparticles treated with gamma radiations of different dosages on Kliebsiella pneumonia (K pneumonia) and Pseudomonas aeruginosa (P aeruginosa) bacteria has been carried out. The ZnO nanoparticles have been synthesized by solution combustion method, and these synthesized samples were irradiated with gamma radiation of different dosages from 0 to 200 kGy. All the samples were characterized using Powder X-ray Diffractometer (Powder XRD), Fourier Transform Infrared Spectrometer (FTIR), Ultraviolet-Visible Spectrophotometer (UV-Vis), and Field Emission Scanning Electron Microscopy (FESEM). The antibacterial activity of gamma irradiated samples was studied against gram negative bacteria K pneumonia and P aeruginosa. The gamma irradiated ZnO nanoparticles show significant variation in the inhibition of cell growth and eventually cell death of the gram negative bacteria. The study shows remarkable antibacterial activity and the lethal effect of gamma irradiated ZnO nanoparticles against K pneumonia and P aeruginosa. Keywords - Antibacterial, Gamma irradiation, SEM, XRD, Zinc oxide.