Compositions: coating or plastic – Coating or plastic compositions – Natural resin or derivative containing
Patent
1985-10-16
1987-12-01
Morris, Theodore
Compositions: coating or plastic
Coating or plastic compositions
Natural resin or derivative containing
106219, 260 97, 426 89, 527600, 527601, 527602, 527604, C08L 8900, C09F 100, C08G 834
Patent
active
047102284
ABSTRACT:
Disclosed are edible film coating compositions of low moisture permeability and their methods of preparation. The compositions comprise cross-linked, refined shellac and preferably an edible member having a reactive hydroxyl or acid moiety selected from the group consisting of edible sources of polyphenolics, edible sources of benzaldehyde and derivatives, acetylated monoglycerides, polyglycerol esters, edible straight chain mono-carboxylic acid, edible di-carboxylic acids and mixtures thereof. Useful weight ratios of shellac to reactant range from 1:0.001 to 0.1. In the preferred method of preparation, the shellac is cross-linked with the reactants in a dry, molten mixture by heating at 130.degree. to 175.degree. C. for 2 to 15 minutes. The resulting coating compound while molten is dissolved in a food grade solvent, applied to a substrate and dried. The coating compositions are particularly useful as a moisture barrier in composite food articles having phases in contact which differ substantially in water activity. Effective films range fro 0.1 to 5 mils in thickness.
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"Dictionary of Food Ingredients", by Robert S. Igoe, Van Nostrand, Reinhold Co., 1983, pp. 69-70.
Egberg David C.
Seaborne Jonathan
General Mills Inc.
Morris Theodore
O'Toole John A.
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