preferably a MF treatment using a MF device having a mean pore size of from 0.01 to 100 micron, the pore size used being dependent on the cooling method.

• 最好用一种平均孔径为0.；01-100微米的MF装置来进行微过滤处理；所用MF装置的孔径尺寸取决于冷却的方法。