Process for treating pulpwoods and pulps with a pitch degrading fungus of the genus Ophiostoma

摘要

Wood-penetrating fungi of the classes Ascomycotina and Deuteromycotina may be used very effectively to degrade pitch in wood forms used in the making of cellulosic products. Such fungi include but are not limited to the blue stain fungi. The process of Ascospore selection may be used to provide fungi which exhibit good growth on wood substrate while having little or no effects on substrate brightness, or even a positive effect on brightness. The treatment positively influences strength properties of ultimate products such as paper. In one embodiment the pulpwood or pulp is treated with a pitch degrading fungus of the genus Ophiostoma.