Nano-Structured ZnO in Food Packaging SystemsAgainst Escherichia coli O۱۵۷:H۷

ZnO nanoparticles were synthesized via microwave-assisted solution combustion method. Product was mixed with low-density polyethylene (LDPE) at ۰.۵%, ۱% and ۲% (w/w) to form films. Then, the antibacterial properties of the ZnO-LPDE films on Escherichia coli PTCC۱۳۳۰ were investigated. Results showed that the spherical ZnO particles were synthesized with average size of ۳۵ nm. Moreover, ZnO-LPDE films showed antibacterial impacts at any concentration. The antibacterial impact is decreased when concentration increase related to the agglomeration of the particles at higher concentration. The antibacterial activities explained by the release of Zn+۲ ions and H۲O۲ ions from the surface of the particles

Keywords:

Escherichia coli , low-density polyethylene film , combustion solution method , ZnO nanoparticles