A method has been devised, using CaCl2 and organic solvent as precipitam, for the preparation of crude cellulase from the culture of Trichod erma koninqi P2. When precipitating impurity, the amount of 4% CaCl2 was added.

• 本文采用了无机盐与有机溶剂相结合的方法制备纤维素酶。 TichodermakoningiP2固体培养基的抽提液中，加入4%25氯化钙，就能达到硫酸按法的同样效果，除去酶液中的一些杂质。