Process for the production of texturized animal protein, and foodstuff thereby produced

Abstract From the Canadian patent

Textured animal protein can be prepared by forming a heated pressurised wet mass of animal meal and extruding the mass or otherwise reducing the pressure and temperature surrounding the mass. The ingredients for the animal meal are chosen so that the measurable gelatin content of the extruded product is less than 10% of the dry solids of the product. As gelatin is a hydrolysis product of collagen, this means that the animal meal should be prepared from material which is intrinsincally low in hydrolysable collagen or the, hydrolysable collagen content should be reduced either by cross-linking (for example with propylene glycol alginate) or by hydrolysis and washing away the gelatin.