Pretreatments of wheat straw with two dif erent lignindegrading fungal cultures Ceriporiopsis
subvesmispora and Phlebia subserialis were carried out and their ef ects on sodaAQ and
kraftAQ pulping were studied. After two weeks of biotreatment of the wheat straw, both
fungus were found to be suitable for biochemical pulping. The fungal pretreatment
decreased the kappa number by as much as 24% and the unbleached pulp brightness
increased by about 7% at a constant yield. Furthermore, the biopretreatment increased the …