Abstract
The antibacterial activity of Zinc oxide nanoparticles against Lactobacillus bacteria was studied. The ZnONPs were fabricated by Pulsed laser ablation of Zinc plate in liquid (DDW) with the various numbers of laser pulses, and 600 mJ laser energy. The optical and structural properties of synthesized ZnO NPs were measured by using Fourier transform infrared spectroscopy, scanning electron microscope, and X-ray diffraction. The results prove that the particles have a spherical shape and homogenous structure. The results of the antibacterial activity of ZnONPs on lactobacillus bacteria exhibit an increase in inhibition zone increase as an increase in the concentration of nanoparticles.
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