Effects of Cellulases and Hemicellulase on the Alkaline Solubility of Dissolving Pulps

摘要

Softwood and hardwood dissolving pulps were treated with purified Trichoderma reesei endoglucanases, cellobiohydrolases and hemicellulases. Endoglucanase II decreased the viscosity and increased the al- kaline solubility of the pulps most efficiently. The effect of EG II was not clearly improved by the action of hemicellulases or other cellulases. Only limited removal of the residual hemicelluloses of the pulps could be obtained using hemicellulases. No synergy was observed between the cellulases and hemi- cellulases nor between the different endoglucanases in a combined treatment.