Patent ID: 8048989
Filing Date: 2011-11-01
Classification: A61K,A61L,C12N

Abstract:
1. A method for the preparation of a biodegradable biopolymer material comprising the steps of: (A) applying onto the surface of a substrate, an aqueous mixed solution containing: (i) a 0.1 to 5% w/v aqueous solution of silk fibroin from a wild silkworm; and (ii) an aqueous solution of reduced wool keratin or an aqueous solution of S-carboxymethyl keratin, wherein the aqueous mixed solution of (A) is prepared by uniformly admixing the aqueous solutions by stirring such that they do not undergo any gelation, precipitation and/or coagulation reaction; (B) cast drying the applied solution to form a membrane-like biodegradable biopolymer material; and (C) subjecting the membrane-like biodegradable biopolymer material to a water-insolubilization treatment by immersion in a 20 to 80% aqueous solution of an alcohol.