【摘要】 针对"膜法回收大豆乳清中的生物活性物质"工艺中的预处理部分进行研究.发现絮凝离心处理分别可以去除乳清中65%左右的脂肪和90%左右的悬浮固体.袋式过滤和精密微孔管等精密过滤手段对乳清的预处理效果不佳,但是袋式过滤可以作为微滤之前的保安过滤方式.为了进一步去除乳清中的杂质和同时灭菌,微滤过程是必须的.包括絮凝离心和微滤在内的预处理过程可以在蛋白质损失率只有10%左右的情况下将悬浮固体全部去除,脂肪去除率高达90%以上.中试的试验结果验证了上述结论.更多还原

【Abstract】 This study was aimed to solve the pretreatment problem in membrane processes for recovering physically functional substances from soy whey.The experiment results showed that flocculation and centrifugation could remove about 65% of the fat and 90% of the SS from the soy whey,while filter bag and filter tube could remove little.But filter bag could be placed before MF to ensure its smooth performance.MF is essential for further removal of the undesirable substances and bacteria.The pretreatment process shall consist of flocculation,centrifugation and MF,which could remove all the SS and more than 90% of the fat from the soy whey,with only about 10% of the protein lost.Pilot-scale experiment proved the conclusions above.更多还原