Abstract: Biomass is a kind of environmental-friendly renewable resource. High effective and economic utilization of biomass will have great influence on solving energy problems and facilitating social sustainable development. However, consuming a great deal of starch feedstock to produce biofuel will lead to foodstuff crisis in our country. An alternative and effective resource for energy supplyment is the agricultural-derived ligocellulosic biomass which is considered as potential material for future biomass-to-fuel. This paper mainly presents the key conversion technologies for utilization of lignocellulose including to pretreatment, enzymatic hydrolysis, fermentation and products separation. And the paper also provides a perspective on the biomass conversion trend, which include biotransformation of lignocellulose, improvement of key enzyme and control of metabolic pathway, process integration and by-product utilization. The overall assessment of biomass resources efficiency will assist in evaluating the economic performance of lignocellulose bioconversion process.

Key words: biomass, lignocellulose, bioconversion technology