Israel scientists say their paper "murderer" with Nanocoatings could be used in food packaging and fighting bacteria like E. coli to extend the shelf life of food products.
The team from the Institute of Nanotechnology and Advanced Materials, University Bar-Ilan University claims to have developed a paper coated with colloidal silver nanoparticles antimicrobial using ultrasonic radiation.
The study "Sonochemical Coating Paper Silver nanoparticles of microbicides "Aharon Gedanken et al., says that the antimicrobial properties of silver are well founded. The use of nanoparticles of silver, 1 / 50, 000 the width of a human hair, extends its antibacterial properties. Method
The process developed in the Kanbar Laboratory for Nanomaterials involves in situ generation of nanoparticles and their simultaneous application to the substrate of the paper.
The group said it was able to control the thickness of silver coating and particle size by varying the precursor concentration and reaction times.
Nanomaterials joined the paper by ultrasonication process, which the group said was "one of the most attractive for coating applications including nanomaterials."
silver nanoparticles are strongly anchored to the surface either by embedding physical or chemical bonds formation or other interactions with the substrate to form a coating significantly.
coatings are very stable with a loss of money described as "minimal" - a key factor to make them available in a number of long-life applications, the researchers said.
said Gadanken the coated paper showed potent antibacterial activity against organisms that cause diseases such as E. coli and S. aureus, killing all bacteria in just three hours.
"We believe this coated paper has potential applications in the food industry as a packaging material with a long shelf-life and anti-fouling properties," the authors said.
The simplicity of the process means it will be easy to reproduce on a large scale to meet the needs of industry. He also claimed that its technology could be used as another alternative to the conservation processes.
"Developing coated paper properties antimicrobial silver nanoparticles could be an alternative to other methods of food preservation which use radiation, heat treatment, low temperature storage or introduction of antimicrobial additives, "they said.
Source: Meat Process
