Method of making a collagen membrane from porcine skin

US6482240B1 · kind B1 · utility

Assignee

• ED. GEISTLICH SOEHNE AG FUER CHEMISCHE INDUSTRIE · CH

Inventors

• Zdenek Eckmayer · Weinheim, DE
• Rainer Dorstewitz · Bensheim, DE
• Lothar Schlosser · Frankfurt am Main, DE
• Josef Anton Böhni · Neuchâtel, CH
• Peter Geistlich · Stansstad, CH

Key dates

• Filing date: Dec 7, 1999
• Grant date: Nov 19, 2002
• Expiry date: Dec 7, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2389/06
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen. In later processing, the rinds are thawed and then enzymatically defatted. Then, a quick alkalinic hydrolyzation is performed on the rinds. Then, an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally, the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be, in preferred embodiments, used for wrapping food products, such as hams.