Production, properties and application of cellulases in the hydrolysis of agroindustrial residues

Quimica nova

Castro, Aline Machado de¹  Pereira Jr, Nei² 

[1] PETRÓLEO BRASILEIRO S.A., Rio de Janeiro, Brasil;Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil

关键词: cellulases;    agroindustrial residues;    lignocellulose.;   

DOI  :  10.1590/S0100-40422010000100031

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Cellulases havebeen intensively studied in the past few years, due to the interests in biofuelsproduction from lignocellulosic materials, since they permit maintaining mildconditions during the conversion process. These enzymes can be produced by abroad variety of naturally occurring microorganisms, such as from genera Aspergillus,Trichoderma, Penicillium and Humicola. Targeting the increasingof expression levels, molecular biology tools have been used for heterologousgenes insertion in host cells, e. g., Pichia pastoris and Escherichiacoli. Enzymes from fungal cellulolytic complex usually act best at pH between4 and 5 under temperatures from 40 to 60 °C and can be used for either sequential(SHF) or simultaneous (SSF) hydrolysis together alcoholic fermentation. In thisreview, the main raw materials for production of cellulases are identified,as well as the state of art of enzymes' properties, production and main applications.

【 授权许可】

CC BY