| 摘要 |
PURPOSE:To easily prepare roux having especially excellent taste and flavor in a very short time, by heating and kneading a raw material containing oils and fats and starchy material with a twin-screw extruder. CONSTITUTION:A raw material containing >=8wt.%, preferably about 15-50wt.% of oils and fats and >=5wt.%, preferably about 10-75wt.% of a starchy material is charged to a twin-screw extruder having reverse screws preferably in 1-3 parts of a heating and kneading zone. The raw material is heated and kneaded at 60-220 deg.C, preferably about 90-150 deg.C under a barrel pressure of normal pressure - 50kg/cm<2> at a rotational speed of screw of 30-300rpm for 25sec-25 min, preferably about 1-12min. Preferably, the kneaded material is cooled to 30-70 deg.C in the twin-screw extruder. |
