US Patent 7390520 Process for preparing a chewable pet food

A process for preparing an extrudable product suitable for forming into a chewable pet food and comprising between about 56% to about 80% dry wheat gluten mix, between about 9% to about 28% liquid plasticizer mix and between about 8% to about 18% moisture by weight of the product is disclosed. The process comprises mixing the dry wheat gluten mix with water in an extruder, to form a moist wheat gluten mix, and mixing the moist wheat gluten mix with a liquid plasticizer mix and extruding at a temperature of less than 70° C. to form the extrudable product. The invention also relates to the extrudable product and to the chewable pet food formed therefrom by means of either further extrusion or injection moulding.