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Antibacterial Paper Coated With Silver Nanoparticles Shows Potential As Food Packaging

January 18, 2011: 07:40 PM EST

Russian and Israeli scientists have developed and successfully lab-tested an antibacterial "killer paper" coated with silver nanoparticles that could be used as food packaging material. The paper helps preserve foods by fighting the bacteria that cause spoilage. Silver is currently used as a bacteria fighter in some medicinal ointments, on kitchen and bathroom surfaces, and even odor-resistant socks. Silver nanoparticles – each 1/50,000 the width of a human hair – are being tested as germ-fighting coatings for plastics, fabrics, and metals because they have a longer-lasting effect than larger silver particles. The silver nanoparticles-coated paper showed potent antibacterial activity against E. coli and S. aureus, two causes of bacterial food poisoning, killing all of the bacteria in just three hours.

Ronen Gottesman, et al. , "Sonochemical Coating of Paper by Microbiocidal Silver Nanoparticles", pubs.acs.org/Langmuir, January 18, 2011, © American Chemical Society
Food Safety
Middle East- Africa
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