Hemicellulose bioconversion
Hemicellulose bioconversion
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DOI：
10.1007/s10295-003-0049-x
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发表时间：
2003-05-01
影响因子：
3.4
通讯作者：
Saha, BC
中科院分区：
文献类型：
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作者：
Saha, BC
各种农业残余物，如玉米纤维、玉米秸秆、小麦秸杆、稻秸杆和甘蔗渣，含有约20-40%的半纤维素，其是自然界中第二丰富的多糖。半纤维素转化为燃料和化学品是有问题的。本文综述了木质纤维素生物质的各种预处理方法以及酶法糖化制备可发酵糖的研究进展。本文介绍了我们对玉米纤维的预处理和酶法糖化的研究，以及用于半纤维素生物转化的新型和改进的酶如内切木聚糖酶、β-木糖苷酶和α-L-阿拉伯呋喃糖苷酶的开发。重点介绍了大规模利用半纤维素生产燃料乙醇、木糖醇、2，3-丁二醇及其他高附加值发酵产品的环境友好型生物工艺的障碍、进展和前景。
Various agricultural residues, such as corn fiber, corn stover, wheat straw, rice straw, and sugarcane bagasse, contain about 20-40% hemicellulose, the second most abundant polysaccharide in nature. The conversion of hemicellulose to fuels and chemicals is problematic. In this paper, various pretreatment options as well as enzymatic saccharification of lignocellulosic biomass to fermentable sugars is reviewed. Our research dealing with the pretreatment and enzymatic saccharification of corn fiber and development of novel and improved enzymes such as endo-xylanase, beta-xylosidase, and alpha-L-arabinofuranosidase for hemicellulose bioconversion is described. The barriers, progress, and prospects of developing an environmentally benign bioprocess for large-scale conversion of hemicellulose to fuel ethanol, xylitol, 2,3-butanediol, and other value-added fermentation products are highlighted.