Biossíntese e atividade antimicrobiana de nanopartículas de óxido de zinco

Abstract

Nanometer-scale materials are the subject of many studies due to their range of technological applications, and their properties, applications and synthesis media are essential. The biosynthesis or green synthesis has been outstanding because it is a viable and sustainable technology to synthesize nanoparticles, taking advantage of the chemical and physical synthesis for being profitable and clean, as they do not consume much energy and do not generate toxic residue. Among these nanoparticles that can be biosynthesized, the zinc oxide nanoparticles (ZnO NPs) stand out due to their mechanical, magnetic, chemical and antimicrobial properties. ZnO nanoparticles were synthesized by biotechnological processes, placing the commercial zinc oxide in contact with the fungi, which have the enzymes and other proteins necessary for the biological synthesis of ZnO nanoparticles. The material obtained was characterized by XRD, Scanning Electron Microscopy (SEM) and Infrared Spectroscopy by Fourrie Transform (FTIR). After the characterization, it was possible to start the tests using the zinc oxide nanoparticles as inhibitors of the growth of pathogenic bacteria through broth microdilution, finding the minimum inhibitory concentration (MIC). The results were satisfactory and consistent with the expected results.