CONTINUOUS STERILIZATION OF FOOD

摘要

PURPOSE:To suppress the lowering of the quality of a food during sterilization by suppressing the variation of internal pressure by the adjustment of the opening of an extruder nozzle, thereby lowering the sterilization temperature as far as possible. CONSTITUTION:An opening adjustment valve 4 is attached to the die adaptor of an extrusion nozzle 3 of a twin-screw extruder and the variation of the pressure in the extruder is suppressed by varying the opening area of the extrusion nozzle. The food raw material can be sterilized under uniform pressure to enable the lowering of the sterilization temperature.