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Release of Naturally Derived Antimicrobial Agents from LDPE Films

Cran, Marlene ORCID: 0000-0002-6000-8093, Rupika, L. A. S, Sonneveld, Kees, Miltz, Joseph and Bigger, Stephen W (2010) Release of Naturally Derived Antimicrobial Agents from LDPE Films. Journal of Food Science, 75 (2). E126-E133. ISSN 0022-1147

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The migration of the naturally derived antimicrobial (AM) agents, linalool, carvacrol, and thymol, from low-density polyethylene (LDPE) films containing ethylene vinyl acetate (EVA) copolymer into the food simulants, isooctane and various ethanol/water mixtures, was studied with a view towards examining the applicability of a first-order kinetic approach as well as a diffusion model approach for describing these systems. The results suggest that the proposed models adequately describe the release of AM agents. The combination of kinetic and diffusion analyses can provide additional information about the release process using the same data set. The analyses suggest that the release of linalool from LDPE/EVA depends on the EVA content in the formulation and that an optimum level of EVA is required to minimize the rate of release. A modification of the existing “idealized diffusion” model is proposed that enables the model to be applied to systems that demonstrate a departure fromlinearity when subjected to conventional analysis. The applicability of the idealized diffusion modelwas compared with the “simulantlimited” model and the results suggest that the formermodel is appropriate for describing most real systems when the simulant (or foodstuff) is favored in the partitioning of the AM agent between the film and the simulant.

Item Type: Article
Uncontrolled Keywords: ResPubID19622, antimicrobial film, diffusion, ethylene vinyl acetate (EVA), low-density polyethylene (LDPE), migration, naturally derived antimicrobial agents
Subjects: Current > FOR Classification > 0908 Food Sciences
Current > FOR Classification > 0912 Materials Engineering
Historical > SEO Classification > 970103 Expanding Knowledge in the Chemical Sciences
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 18 May 2012 05:22
Last Modified: 09 Sep 2019 03:18
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Citations in Scopus: 42 - View on Scopus

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