Collagen concentrate, its use, as well as process for its fabrication.

摘要

Film-forming collagen concentrate comprises at least 18 wt.% of collagen-dry matter, based on the total weight of the concentrate, where at least 50 wt.% of the protein from the homogeneous suspension (which is prepared from the concentrate in 0.15M aqueous sodium dihydrogen phosphate buffer having a pH of 7) and a portion of the dry matter (0.5 wt.%) are separated as sediment by centrifugation at 1780 relative force of centrifugation (RFC) for 15 minutes and at 15[deg] C. An independent claim is included for a method for preparing a food casing (preferably artificial sausage casing), using the collagen concentrate, comprising: (a) preparing an aqueous collagen mass from animal hides or other animal sources; (b) concentrating the aqueous collagen mass until it has a solid fraction of 18 wt.% or more, based on the weight of the concentrate; (c) mixing the concentrate with water or dilute aqueous inorganic and/or organic acid to obtain a collagen mass, which is extrudable or castable; (d) shaping the collagen mass into a casing by (co)extrusion or casting process; (e) solidifying the casing, and optionally (f) drying the casing.