Application of membrane separation technique could improve the quality of refined oil and soybean protein isolate, prevent producing alkali washed wastewater, and high quality soybean lecithin, lysophosphatide and soybean oligosaccharide were obtained.

• 膜技术的应用提高了精炼油、分离蛋白的品质，杜绝了碱炼废水的产生，治理了乳清废水达标排放的问题，同时得到了高品质的大豆磷脂、溶血磷脂及副产物大豆低聚糖等，为大豆精深加工膜技术产业化奠定了基础。