Patent ID: 8628817

Claim:
A process for production of wet solutions of peptides concentrated to 50% or dry peptides, for human or animal consumption, using as raw material secondary products generated in the production of protein foods for human consumption, wherein the process comprises: a) milling the raw material and pumping it to heat exchangers; b) heating the milled raw material to 50° C.; c) centrifuging the milled and heated raw material to provide a product with a lower fat percentage than the raw material; d) pumping the product with a lower fat percentage than the raw material to digestion tanks; e) modifying the pH of the product in the digestion tanks by adding an acid and/or base; f) heating the digestion tanks comprising the product and adding a mixture of proteolytic enzymes to the digestion tanks, wherein the digestion tanks are heated to a temperature of 47° C. to 53° C.; g) pumping the product once the enzymatic process is complete to a heat exchanger to increase the temperature of the digested product to 96° C.; h) centrifuging the digested product to extract remaining oil and separate non-hydrolyzed solids and liquid with soluble solids and peptides from the digested product; i) chemically hydrolyzing the separated non-hydrolyzed solids by addition of an acid and/or base; j) neutralizing chemical hydrolysis of the separated solids; and k) concentrating the hydrolyzed separated solids in a descending film evaporator, a spray dryer, or an air band dryer to 50% solids.