Control of Lipid Oxidation by Nonmigratory Active Packaging Films Prepared by Photoinitiated Graft Polymerization

Tian, F. and Decker, E. A. and Goddard, J. M.. (2012) Control of Lipid Oxidation by Nonmigratory Active Packaging Films Prepared by Photoinitiated Graft Polymerization. Journal of Agricultural and Food Chemistry, 60 (31). pp. 7710-7718.

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Abstract

Transition metal-promoted oxidation impacts the quality, shelf life, and nutrition of many packaged foods. Metal-chelating active packaging therefore offers a means to protect foods against oxidation. Herein, we report the development and characterization of nonmigratory metal-chelating active packaging. To prepare the films, carboxylic acids were grafted onto the surfaces of polypropylene films by photoinitiated graft polymerization of acrylic acid. Attenuated total reflectance/Fourier transform infrared spectroscopy, contact angle, scanning electron microscopy, and iron-chelating assay were used to characterize film properties. Graft polymerization yielded a carboxylic acid density of 68.67 +/- 9.99 nmol per cm(2) film, with ferrous iron-chelating activity of 71.07 +/- 12.95 nmol per cm(2). The functionalized films extended the lag phase of lipid oxidation in a soybean oil-in-water emulsion system from 2 to 9 days. The application of such nonmigratory active packaging films represents a promising approach to reduce additive use while maintaining food quality.

Item Type: Article
Additional Information: Tian, Fang Decker, Eric A. Goddard, Julie M.
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Hierarchical Manufacturing
Depositing User: Robert Stevens
Date Deposited: 26 Mar 2014
Last Modified: 26 Mar 2014 19:43
URI: http://eprints.internano.org/id/eprint/2092

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