| 초록 |
Nanotechnologies are developing rapidly in diversity industries. Especially titanium dioxide has been widely used in many products as an additive, including as a white pigment, food colorant, and cosmetic cream. However, with useful properties, concerns about their potential toxic effects and environmental impact become known. Antimicrobial activity with commercially available TiO2 nanomaterials were tested using Gram-negative Escherichia coli, Gram-positive Bacillus subtilis, and yeast, Saccharomyces cerevisiaeyeast strain. TiO2 nanoparticles were tested to observe effects of UV wavelength and UV exposed time. In vivo metabolite, G6P (glucose 6 phosphate) was measured by GC/MS. In percentage survival rate, S. cerevisiae showed highest survival rate than other two species. TiO2 nanoparticles have toxic effects only UVC range. And G6P concentration of TiO2 exposed cell is higher than control. |
