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通过试验研究，探讨了用于膨化——浸油的大豆挤压膨化系统参数——挤压套筒温度、模孔孔径、物料水份、螺杆转速，对考察指标——膨化后、浸前的膨化物的粗脂肪和浸后的残油率、氮可溶解指数、脲酶活性的影响。指出：１）膨化后的大豆应将其温度降至５０℃～６０℃时，即可进入浸出器。否则，存放时间长，使柏的残油率增加。２）只要大豆挤压膨化系统参数选择合适，有可能使原设备的浸出能力提高１００％。
Through the experimental study, the parameters of soybean extruding system used in puffing - oil immersing were discussed - extrusion sleeve temperature, die hole diameter, material moisture, screw speed, the investigation index - puffing, Extruded crude fat and residual oil leaching rate, nitrogen solubility index, the impact of urease activity. Pointed out: 1) Expanded soybeans should be the temperature dropped to 50 ℃ ~ 60 ℃, you can enter the extractor. Otherwise, the storage for a long time, so that Bo’s residual oil rate increased. 2) As long as the soybean extrusion system parameters are properly selected, it is possible to increase the leaching capacity of the original equipment by 100%.