Cross-linked protein composition using aluminum salts of acetic acid
AssigneeDynagel Incorporated
InventorJoseph L. Shank
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Abstract
This invention relates to cross-linked collagen-derived protein compositions having improved Bloom gel strength and increased viscosity. More particularly, it relates to improvement by cross-linking the protein with an aluminum salt of acetic acid selected from the group consisting of aluminum subacetate, aluminum triacetate and an alkali metal aluminum acetate double salt.
Claims19
A cross-linked collagen-derived protein composition having improved Bloom gel strength and increased viscosity, said protein composition being the reaction product of a water-soluble collagen-derived protein with an aluminum salt of acetic acid selected from the group consisting of aluminum subacetate, aluminum triacetate and an alkali metal aluminum acetate double salt.
In a method for cross-linking a water-soluble collagen-derived protein with a polyvalent metal ion, the improvement comprising the steps of reacting the protein in water with an aluminum salt of acetic acid selected from the group consisting of aluminum subacetate, aluminum triacetate and an alkali metal aluminum acetate double salt whereby the treated protein is a cross-linked protein composition of improved Bloom gel strength and increased viscosity.
A method for treating a water-soluble protein comprising the steps of:
- (a) preparing a clear aluminum subacetate filtrate solution having a solids content of from about 0.05 to about 16 weight percent and a pH value in the range of from about 4.0 to about 4.2, said solution being prepared by reacting aluminum sulfate octadecahydrate with a quantitative amount of calcium carbonate in water to form a hydroxyaluminum carbonate and treating the resultant hydroxyaluminum carbonate with a quantitative amount of acetic acid to form an aluminum subacetate solution, ageing said solution for a period of from about 20 to about 24 hours, filtering said aged solution to recover said aluminum subacetate as a clear filtrate solution having sufficient water to adjust the solids content;
- (b) providing a collagen-derived aqueous protein solution, said solution comprising 10 parts by weight water-soluble protein and 90 parts by weight water, said protein selected from the group consisting of an acid-hydrolyzed collagen, an alkaline-hydrolyzed collagen and proteolytic enzyme-hydrolyzed collagen;
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- (c) reacting the aluminum subacetate with the water-soluble protein by adding the filtrate solution to the protein solution with mixing agitation, whereby said reaction product is a cross-linked protein composition having an improved Bloom gel strength and increased viscosity.
Dependencies are inferred from the claim text.