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

Abstract

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.

Preparation and antimicrobial characterization of silver-containing packaging materials for meat

“…For example, Irgaguard B5000 contains 0.44% elemental silver, resulting in up to 0.0132% silver in the films used in this study. Antimicrobial effects have been achieved earlier using higher concentrations (Dogan et al, 2009;Fernández et al, 2010).…”

“…Although various techniques have been used in preparing silver-containing polymeric materials (Muñoz-Bonilla & Fernán-dez-García, 2012) and antimicrobial effects have been shown in vitro in several studies (Boschetto, Lerin, Cansian, Pergher, & Di Luccio, 2012;Dogan, Koral, & Inan, 2009;Fernández et al, 2010;Lalueza et al, 2011;Pehlivan, Balköse, Ülkü, & Tihminlio glu, 2005), fewer studies have been published about the effects of silver in storage of real food, such as meat (Lee, Lee, Jones, Sharek, & Pascall, 2011), fruit or vegetables (Costa, Conte, Buonocore, & Del Nobile, 2011;Martínez-Abad, Lagarón, & Ocio, 2014) or cheese (Gammariello, Conte, Buonocore, & Del Nobile, 2011;Incoronato, Conte, Buonocore, & Del Nobile, 2011). The aim of this study was to prepare silver-containing packaging materials and evaluate their antimicrobial effect against several bacterial strains associated with meat spoilage.…”

Integrated Synthesis of Zeolites Using Coal Fly Ash: Element Distribution in the Products, Washing Waters and Effluent

“…This result could compromise the use of this zeolitic product in specific applications requiring less contamination. [38][39][40] The CEC was tested with a view to exchanging the Na + ions originally present in the zeolites for NH 4 + and Ca 2+ ions.…”

“…[25][26][27][28] Both natural zeolites and those directly synthesized (one step or one-pot process) 29,30 from less pure materials limit their possible uses to (i) removing metals from industrial wastewater; [31][32][33] (ii) acid mine drainage. 22,[34][35][36][37] Some other specific applications (catalysis, 38 food packaging, 39 biomaterials, 40 builder in detergents, 23,41 soil treatment) 42 require high Vol. 27, No.…”

Synthesis of mono- and bi-layer MFI zeolite films on macroporous alumina tubular supports: Application to nanofiltration

“…Due to these manifold applications of crystalline zeolites, increasing attention worldwide has been paid to the preparation of zeolites in forms suitable for practical utilization and to the development of methods for producing zeolite objects (films, membranes, pellets, microspheres,...) with controllable thickness. Among these zeolite objects, supported zeolite layers have great potentiels in membrane separation [12,13], molecular sieving [14], ion exchange [15], selective adsorption [16], microelectronic devices [3,[17][18][19], chemical sensors [20,21], anti-microbial coating [22,23], and corrosion resistance [24][25][26]. This zeolite coating has great utility and its function and application can be easily tuned by changing the zeolite species used to generate it.…”