A process for the preparation of protein enriched concentrates, protein enriched concentrates and their use

摘要

1. A process for producing foodstuffs or feedstuffs, characterized in that protein hydrolyzates, processed abattoir waste, leather waste, waste from the meat and/or fish industry, peptones, products of single-cell proteins or autolyzed yeasts or mixtures thereof are added to liquid by-products of lactose production, lactoprotein recovery, reverse osmosis and/or electrodialysis in the dairy industry either individually or in the form of a mixture having a dry matter content of from 25 to 75% by weight, the pH-value is adjusted to at most pH 6, the mixture is stirred intensively for at least 1 hour, the above-mentioned product being added in such a quantity that a dry matter content of at most 65% is obtained, the pH-value of the reaction mixture is then adjusted to 6.0 +- 0.5 by the addition of alkali hydroxides or ammonia and the product is dried.