Ion sequestering active packaging materials
AssigneeUniversity of Massachusetts
InventorsJulie M. Goddard, Eric A. Decker
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Abstract
The invention described herein provides a modified material is a packaging material in which, at least one side, the product contact side, has been modified to sequester ions in order to prevent the ions from being available to promote degradative reactions in biological or chemical products such as food, beverages, pharmaceuticals, neutraceuticals, cosmetics, paints and chemicals. The invention described herein also includes methods of making the packaging materials and methods of using the packaging materials for preserving the integrity of biological and chemical compounds.
Claims28
A packaging material comprising one or more ion chelators covalently attached to at least one side of said material, wherein said material is selected from the group consisting of films, particles, spheres, fibers, multilaminates, bioreactor packing material, bottles and jars, and wherein said one or more ion chelators is selected from the group consisting of deferoxamine, ethylene diaminetetraacetic acid, poly(acrylic acid), hydroxamic acid, biomimetic synthetic sideorophores, desferroxamine-analogs with dydroxamic acid functionality, and combinations thereof.
A method of making an ion chelator-modified material comprising:
- a) exposing unmodified material to ultraviolet radiation;
- b) attaching a cross-linking agent to at least one surface of the irradiated material;
- and
- c) attaching one or more ion chelators to said cross-linking agent.
A method of preserving a product comprising storing said product in a packaging material having one or more ion chelators covalently attached to at least the side of said packaging material in contact with said product, wherein said one or more ion chelators is selected from the group consisting of deferoxamine, ethylene diaminetetraacetic acid, poly(acrylic acid), hydroxamic acid, biomimetic synthetic siderophores, desferroxamine-analogs with hydroxamic acid functionality, and combinations thereof.
Dependencies are inferred from the claim text.