Experimental Observation on Cellulosic Biodegradation in Solid State Fermentation
固态发酵中纤维素基质降解过程初步研究

A mixed medium of steam exploded wheat straw (SEWS) and wheat bran was fermented in solid state by Penicillium decumbens JUA10. Various degraded constituents and activities of enzymes were analyzed. The process of biodegradation of cellulose is actually simultaneous saccharification and fermentation, and feedback inhibition of reducing sugar on cellulose or hemicelluloses may not heavily occur. Biodegradation of cellulose, hemicellulose was not proportional to activities of cellulase and hemicellulase. The compact structure of lignocellulose was the major cause for the low degradation rate of cellulose and hemicellulose. Hemicellulose was degraded even more slowly than cellulose. Starch was degraded easily while lignin was not degraded.