Predicting the Release and Diffusion of Nisin from a Polyvinyl Alcohol Matrix Coated Film

Predicting the Release and Diffusion of Nisin from a Polyvinyl Alcohol Matrix Coated Film

Kay Cooksey
Clemson University

Antimicrobial packaging systems for food products are complex, multivariable systems that can that be difficult to predict regarding antimicrobial release and diffusion. Factors such as pH, temperature, polymer matrix, food product composition and antimicrobial characteristics can all affect the rate at which antimicrobial can be released from the packaging system. The packaging system proposed is a polyvinyl alcohol (PVOH), Nisaplin® (2.5% nisin) containing coated film. Theoretical diffusion/release mechanisms for this system will be discussed into addition to potential methodology to analyze and predict nisin diffusion from the packaging system.