Cross-linked gelatin gels and methods of making them
First Claim
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1. A method of preparing a cross-linked protein gel comprising:
- adding a factor XIII transglutaminase to a composition containing gelatin, while the gelatin is in a sol state at or below about 37°
C. so as to form a transglutaminase and gelatin mixture; and
incubating said mixture at a temperature at which the gelatin undergoes gelation, whereina cross-linked gelatin gel is formed by cross-linking of the gelatin by the transglutaminase.
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Abstract
Enzymatically cross-linked protein gels and methods for preparing them are disclosed. The methods comprise adding a transglutaminase, such as factor XIII, to a composition of a temperature-sensitive gel-forming protein, such as gelatin or collagen, and incubating the composition and transglutaminase under gel-forming conditions. The resulting gels have superior strength and thermal stability, and can be used within a variety of medical and industrial applications.
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28 Claims
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1. A method of preparing a cross-linked protein gel comprising:
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adding a factor XIII transglutaminase to a composition containing gelatin, while the gelatin is in a sol state at or below about 37°
C. so as to form a transglutaminase and gelatin mixture; andincubating said mixture at a temperature at which the gelatin undergoes gelation, wherein a cross-linked gelatin gel is formed by cross-linking of the gelatin by the transglutaminase. - View Dependent Claims (2, 3, 4, 5, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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6. A method of preparing a cross-linked protein gel comprising:
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forming an aqueous solution containing gelatin; and adding a factor XIII transglutaminase to said solution in an amount sufficient to catalyze cross-linking of the gelatin; and incubating said transglutaminase and said solution under conditions of time and temperature at which the gelatin undergoes gelation, wherein a cross-linked gelatin gel is formed by cross-linking of the gelatin by the transglutaminase. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of preparing a cross-linked protein gel comprising:
adding a factor XIII transglutaminase to a temperature sensitive protein gel containing gelatin, whereby said transglutaminase diffuses into the gel and catalyzes cross-linking of the gelatin.
Specification