Patent ID: 7285638
Filing Date: 2007-10-23
Classification: B01D,C07K,C08H

Abstract:
1. A method of extracting biologically active collagen from the skins of the salmonidae fish family comprising: (a) removing the scales, gills, and meat tissue from the fish skin by utilizing wooden and glass tools in order to obtain a clean skin material; b) hydrating the skin material in a glass container containing 0.1 to 1.5% lactic acid solution (w/w) at 15° to 20° C. for 24 to 48 hours; and c) repeatedly filtering the hydrated skin solution with natural silk filters that have a similar structure to the biologically active collagen, such that the cell elements, pigments, and remains of the acid solution are removed, and undamaged biologically active collagen is obtained.