Ag/Zn Zeolite Containing Antibacterial Coating for Food-Packaging Substrates

• Published in: Journal of plastic film & sheeting Vol. 25; no. 3-4; pp. 207 - 220
• Main Authors: Dogan, Hacer, Koral, Murat, İnan, Tülay Yılmaz
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01-07-2009; Sage Publications
• Subjects: Applied sciences; Biological and medical sciences; Coatings. Paints, varnishes and inks; Escherichia coli; Exact sciences and technology; Food industries; Fundamental and applied biological sciences. Psychology; General aspects; Handling, storage, packaging, transport; Polymer industry, paints, wood; Uses; antibacterial coating; ion-exchanged zeolite; vinyl acetate coating; antibacterial zeolite; aluminum foil; Biological properties; Coating material; Use; Aluminium; Foodstuff; Zeolite; Experimental study; Composite material; Bactericidal effect; Vinyl acetate polymer; Concentration effect; Silver ion; Antibacterial agent; Metal foil; Zinc ion; Active packaging; Vinyl ester polymer
• ISSN: 8756-0879; 1530-8014
• DOI: 10.1177/8756087909354479

Antibacterial packaging is gaining a lot of importance in the food industry. Plastics such as polypropylene, polyethylene, polyamides, polyethylene terephthalate, polyvinylidene chloride copolymers, etc., and paper, paperboard, and aluminum foils have been used as food-packaging materials. In the past, aluminum foil had found wide application in food packaging since it has a high barrier to light, moisture, oxygen, other gases, and volatile aromas. It is believed that aluminum foil coated with antibacterial material may play a role in extending shelf life of ready-to-eat food products and increase the quality and safety of the food products. In this study, silver- and zinc-supported zeolite 4A was prepared by ion-exchange method. A 6—10 µm thick vinyl acetate lacquer with antibacterial zeolite was cast onto the aluminum foil. This aluminum foil was later exposed to bacterial growth test and was shown to exhibit a very good antibacterial property against Escherichia coli. These antibacterial coatings could be useful for aluminum foil/plastic film laminates.