PRODUCTION OF PROTEIN-CONTAINING POWDERY PRODUCT

摘要

The invention relates to a method for producing a powdery product from a protein-containing liquid having a dry solid content, comprising the steps of providing a first feeding stream of protein-containing liquid, providing a second feeding stream having a higher content of dry solids than said first feeding stream, mixing said first feeding stream and said second feeding stream obtaining a main stream, heating the main stream in a heater, transferring the heated main stream to a separator, flash separating volatile components from said heated main stream obtaining a main stream protein-containing concentrate, and subjecting at least a part of the main stream protein-containing concentrate to a drying step obtaining a powdery product. The method according ot the invention is more energy efficient than prior processes in that the amount of water to be evaporated in the drying step is significantly reduced, requiring smaller drying equipment, less air and less energy, the total thermal degradation of particles is strongly reduced and a powdery product having higher 'bulk density' is obtainable. The method relates to production of powdery products from a large variety of sources, such as milk powder, egg powders, vegetable protein powders, including fat-containing powders.