earticle

영어

Nanotechnologies are developing rapidly in many industries. Especially titanium dioxide has been widely used in many ways as an additive, including as a white pigment, foodcolorant, and sunscreens and cosmetic cream. However, with useful properties, concerns about their potential toxicity and environmental impact are arising . The purpose of this study is to test of many used commercial nanoparticle, and to prove that antibacterial effect. Antimicrobial activity with commercial product of TiO2 nanomaterials were tested using Gram-negative Escherichia coli and Gram-positive Bacillus subtilis, and yeast, Saccharomyces cerevisiaeyeast strain. In percentage survival rate, S. cerevisiae showed highest survival rate than other two species. TiO2 nanoparticles were tested effect of wavelength and maintenance effect. Then to compare antimicrobial activity, TiO2 nanoparticles have antibacterial effect only UVC range.