纤维素酶与木质纤维素生物降解转化的研究进展  

Progress on cellulase and enzymatic hydrolysis of lignocellulosic biomass

作　　者：方诩[1,2] 秦玉琪[1,2] 李雪芝[1,2] 王禄山[1] 汪天虹[1] 朱明田[1,2] 曲音波[1,2] 

机构地区：[1]山东大学微生物技术国家重点实验室,济南250100 [2]山东大学国家糖工程技术研究中心,济南250100

出　　处：《生物工程学报》2010年第7期864-869,共6页Chinese Journal of Biotechnology

基　　金：国家高技术研究发展计划(863计划)(Nos.2006AA020201;2007AA05Z455);山东大学自主创新基金(No.2009DX002)资助~~

摘　　要：利用纤维素酶将预处理后的秸秆降解成可发酵性单糖,然后发酵生产所需的液体燃料及化工产品的技术,对于我国解决能源、环境、人口就业等难题有着巨大的积极影响。在木质纤维素生物降解转化工艺中,减少纤维素酶用量及提高酶解效率是降低木质纤维素降解成本的关键。纤维素酶系和木质纤维素酶水解技术的改进需要深入了解纤维素酶系统的组成及其协同作用、纤维素酶的结构与功能以及纤维素酶的生产技术。将就以上几个方面的研究进展进行讨论,并深入探讨了纤维素酶糖化能力的评价方法。Biofuels and bio-based chemicals from lignocellulosic biomass are sustainable, making them alternatives to petroleum-derived fuels and chemicals to address the challenges of the shortage of crude oil supply and climate change resulted from the overconsumption of petroleum-based products, particularly in China. However, high cost in liberating sugars from lignocellulosic biomass is still the bottleneck of the commercialization of biofuels and bio-based chemicals. In this article, the major components of cellulases and their synergistic role in the hydrolysis of pre-treated biomass is reviewed, followed by how to evaluate the enzymatic hydrolysis. With the elucidation of the underlying mechanism of the conformations of the enzyme molecules and their effectiveness in attacking cellulose substrate, more efficient enzymes are expected to be developed. Using the high production strain Penicillium decumbens, the on-site production of cellulases for cellulose ethanol production is discussed.

关 键 词：纤维素酶 木质纤维素类生物质 纤维素酶解 

分 类 号：S216.2[农业科学—农业机械化工程]