Process for removing solvent from proteinaceous material
AssigneeAstra Protein Products AB
InventorsTryggve Lund Knutsen, Sven-Olof Osterman
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Abstract
Solvent is evaporated from proteinaceous material by treating the protein material with humidified air at controlled rate, the humidified air having a temperature of 40.degree. C to 90.degree. C and a relative humidity of at least 50% such that enough energy is added for vaporization of the solvent at the same time as water is condensed from the humidified air and replaces the amount of solvent being vaporized.
Claims13
A process for evaporation of solvent from solvent-containing proteinaceous material which comprises continuously treating the protein material in a vertical column with countercurrently flowing humidified air in an amount of from 1.0 to 5.0 m.sup.3 per kg. of treated protein material, the column being indirectly heated to a temperature below the temperature of the humidified air introduced and the humidified air having a temperature of from 40.degree. C. to 90.degree. C. and and a relative humidity of at least 50% such that enough energy is added for vaporization of the solvent at the same time as water is condensed from the humidified air and replaces the amount of solvent being vaporized.
A nondenaturated, low residual solvent protein product with retained functional properties obtained by a process in which solvent-containing proteinaceous material is treated with humidified air in an amount of from 1.0 to 5.0 m.sup.3 per kg of treated protein material while heated indirectly to a temperature below the temperature of the humidified air, the humidified air having a temperature of from 40.degree. C. to 70.degree. C. and a relative humidity of at least 50%.
Dependencies are inferred from the claim text.