Protein-containing emulsions and adhesives, and manufacture and use thereof
AssigneeBiopolymer Technologies, Ltd.
InventorsAnthony A. Parker, Joseph J. Marcinko
Life of this patent
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Abstract
This invention provides emulsions and adhesives comprising proteins that can be isolated from a variety of sources including renewable plant biomass, and methods of making and using such emulsions and adhesives.
Claims49
An adhesive composition comprising:
- (a) from about 5% to about 90% (w/w) of a reactive prepolymer;
- and
- (b) from about 10% to about 99% (w/w) of an isolated polypeptide composition capable of dispersing the reactive prepolymer in an aqueous medium.
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An isolated polypeptide composition comprising a plurality of water insoluble polypeptides derived from castor meal, castor protein isolate, soy meal, soy protein isolate, canola meal, canola protein isolate, or a combination thereof, wherein the isolated polypeptide composition is capable of dispersing or emulsifying an oil in water or water in oil.
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An isolated polypeptide composition capable of dispersing or emulsifying an oil in water or water in oil produced by a method comprising the steps:
- (a) incubating an aqueous solution comprising canola meal, canola protein isolate, castor meal, castor protein isolate, soy meal, or soy protein isolate, or a combination thereof, at a pH in the range from about 6.5 to about 13 for at least 5 minutes;
- (b) after step (a), reducing the pH to about 4.0-5.0 thereby to precipitate both at least a portion of water-soluble protein and water-insoluble protein;
- (c) harvesting the protein precipitated in step (b), thereby to produce the isolated polypeptide composition;
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- (d) washing the protein harvested in step (c) thereby to produce the isolated polypeptide composition.
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A stable emulsion comprising from about 1% to about 90% (w/w) of an oil and from about 1% to about 99% (w/w) of an isolated polypeptide composition, wherein the polypeptide composition produces a stable emulsion of the oil in an aqueous medium.
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Dependencies are inferred from the claim text.