Biological pretreatment of softwood Pinus densiflora by three white rot fungi.

摘要: The effects of biological pretreatment on the Japanese red pine Pinus densiflora, was evaluated after exposure to three white rot fungi Ceriporia lacerata, Stereum hirsutum, and Polyporus brumalis. Change in chemical composition, structural modification, their susceptibility enzymatic saccharification degraded wood were analyzed. Of tested, S. hirsutum selectively lignin this sortwood rather than holocellulose component. After eight weeks with total weight loss 10.7%, while highest at 14.52% among tested samples. However, lower 7.81% compared those C. lacerata P. Extracelluar enzymes from showed higher activity ligninase cellulase other fungi. Thus, changes composition well correlated enzyme activities related lignin- cellulose degradation these Based data obtained analysis physical characterization by X-ray Diffractometry (XRD) pore size distribution, considered as an effective potential fungus for pretreatment. In particular, increase available over 120 nm pretreated powder made accessible further saccharification. When chips treated enzymatically saccharified using commercial (Cellulclast 1.5 L Novozyme 188), sugar yield greatly increased (21.01%) non-pretreated control samples, indicating that provides process increasing woody biomass.