Effect of Surfactant on Cellulase Hydrolysis and Its Mechanism

doi:10.13560/j.cnki.biotech.bull.1985.2019-0158

Abstract

Abstract: With the increasing tension of energy crisis and environmental problems,it is becoming growingly important to seek an environmentally friendly,sustainable and adequate energy alternative. The research on fermentation of lignocellulose biomass to produce biofuels and other biomaterials has attracted more and more attention. Enzymatic degradation of lignocellulose is a hot topic in biomass conversion and utilization. Surfactant（SF）can significantly improve the enzymatic hydrolysis efficiency and conversion of cellulose,but it is still affected by many factors. Here we reviewed the research status of SF on enhancing the hydrolysis ability of cellulase,and summarized the types and concentration of SF,the source and composition of cellulase,the influence of substrate structure,and hydrolysis conditions on the effectiveness of SF. Further,we analyzed the mechanism of SF enhancing cellulosic enzyme efficiency and conversion rate based on the adsorption properties of enzymes,the stability and activity of enzyme,and the surface structure of substrate. In view of the current research situation,we prospected the future research directions,that is,further exploring the role of molecular interaction among SF,cellulase and substrates in stabilizing cellulase activity,changing the adsorption properties of enzymes,and the surface properties of substrates,aiming to provide a theoretical reference for the enzymatic transformation of lignocellulose biomass.

Key words: surfactant, lignocellulose, hydrolysis, cellulase, stability, adsorption

ZHANG Jia-shun, GAO Li-li, MA Jiang-shan, LIU Gao-qiang. Effect of Surfactant on Cellulase Hydrolysis and Its Mechanism[J]. Biotechnology Bulletin, 2019, 35(9): 11-20.

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