Antimicrobial Properties of ZnO Nanoparticles

The ZnO nanoparticle has an antibacterial activity against gram positive and gram negative bacteria. The aim of this study was to determine the relation between Corona and ZnO nano particle absorption, Also its effect on bacteria causing nosocomial infections.

The samples of six nylon made fabric with the dimension of 20 by 20 cm2 dimension were prepared and were washed for preparing corona discharge. The coronadischarge was done in six different situations. After preparation of Nano-particle samples and medium, Staphylococcus aureus and Escherichia coli were cultured on trypticase soy agar medium and incubated at 37°C for 24h. Finally anti-bacterial power of nano-particle was measured.

Our results showed that the antibacterial activity of ZnO increased by increasing of corona power and time of plasma and number of colonies were decreased.

The rate of antibacterial property of ZnO nanoparticle is proportional with corona power and deposition that is shown the absorption level of ZnO nano particle on samples. The finding of study indicates the fabric with nano ZnO particle is a promising method in eliminating of bacteria.