Abstract: The present invention is directed to a process for the production of wet solutions of peptides concentrated to 50% or dry peptides, for human and animal consumption, using as raw material secondary products generated in the production of protein food for human consumption, which is started with a low temperature fat extraction previous to the enzymatic action, which is distorted by the presence of fat and is the enzymatic hydrolysis is combined with acid hydrolysis, increasing the protein yield to nearly 100%, eliminating organic liquid industrial waste (LIW) from industrialization, starting from products and residues of animal protein origin, fish and aquaculture.