Advance in research on degradation of crystalline cellulose

Due to increased consumption of fossil energy and its pollution to the environment seeking renewable and clean energy has become the focus of attention in many countries. Lignocellulose is the most organic polymer on the earth, which has great potential for solving the energy crisis, but it has not been effectively used, the existence of the crystalline region of cellulose is a major problem hindering its degradation. This paper introduces the structure of crystalline cellulose, decrystallization method and potent degradation strain; the structure and function of cellulase; degradation mechanism of crystalline cellulose; genetic engineering and enzyme engineering modification of cellulase. It is underlined that should increase to excavate for the excellent, thermostable cellulose-degratdaion strains and thorough study of related function mechanism of carbohydrate binding module, it is of great significance for the efficient degradation of crystalline cellulose.