METHOD FOR PRETREATMENT AND SACCHARIFICATION OF BIOMASS FOR PRODUCTION OF BIOFUELS OR BIOPLASTICS

摘要

The present invention relates to a method for pretreatment and saccharification of biomass for production of biofuels or bioplastics. According to the present invention, the incubation treatment of biomass with novel fibrinolytic mold fungus KPYBE10 before physical and chemical pretreatment can produce a saccharification liquid having the same glucose concentration despite the use of a low sulfuric acid concentration, a low temperature, a short time, and a small amount of a diastatic enzyme. In addition, physical and chemical conditions of the present invention reduce the generation of fermentation inhibiting substances, such as furfural and hydromethylfurfural, thereby providing an incidental effect that a decontamination process is unnecessary. The pretreatment method using acid hydrolysis of the present invention can drastically reduce pretreatment and saccharification costs and high-pressure steam and electricity costs, which account for 53%, more than half of the conventional second-generation bioethanol direct production costs. A low-cost saccharification liquid prepared by the above method can be used as a microorganism medium for industrial fermentation for the production of second-generation biofuels and bioplastics, and therefore the method is a novel, cheap and environmentally friendly method capable of rapidly realizing commercial-scale production.