Patent ID: 11857663
Assignee: EVOLVED BY NATURE, INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 0:
1. A composition comprising lyophilized silk fibroin protein fragments that are substantially devoid of sericin, the silk fibroin protein fragments having an average weight average molecular weight selected from about 17 kDa to about 38 kDa, about 35 kDa to about 40 kDa, about 40 kDa to about 45 kDa, about 45 kDa to about 50 kDa, about 50 kDa to about 55 kDa, or about 39 kDa to about 80 kDa, and a polydispersity of about 1.5 to about 3.0, wherein, prior to being lyophilized, the silk fibroin protein fragments:
form a substantially homogeneous solution comprising between 0 ppm to about 500 ppm of inorganic residuals and between 0 ppm to about 500 ppm of organic residuals, and do not spontaneously or gradually gelate and do not visibly change in color or turbidity when in a solution for at least 10 days.