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林业科学 ›› 2007, Vol. 43 ›› Issue (05): 99-105.doi: 10.11707/j.1001-7488.20070517

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木质纤维生产燃料乙醇的生物转化技术

陈介南 王义强 何钢 章怀云 周再魁   

  1. 中南林业科技大学生物环境科学与技术研究所,长沙410004
  • 收稿日期:2006-08-08 修回日期:1900-01-01 出版日期:2007-05-25 发布日期:2007-05-25

Bioconversion of Lignocellulose to Ethanol

Chen Jienan,Wang Yiqiang,He Gang,Zhang Huaiyun,Zhou Zaikui   

  1. Institute of Biological and Environmental Science & Technology,Central South University of Forestry and Technology Changsha 410004
  • Received:2006-08-08 Revised:1900-01-01 Online:2007-05-25 Published:2007-05-25

摘要:

木质纤维生物转化乙醇可以避免以粮食为原料生产燃料乙醇所带来的“与农争地”和“与人争食”的弊端,兼得经济、生态、环保、社会多重效益。木质纤维原料的物理化学特性决定其具有不同于淀粉和糖类原料转化的难度和复杂性,这也是木质纤维生物转化乙醇成本居高难下、商业化裹足不前的主要技术原因。本文以国际(特别是美国)的研究和开发进展为背景,探讨木质纤维生物转化乙醇的几个富有挑战性的技术问题,并在同步糖化共发酵(SSCF)概念的基础上,提出优化的并行糖化共发酵生产模型。

关键词: 生物能源, 燃料乙醇, 木质纤维, 生物转化, 发酵工程

Abstract:

An overview of recent advances in biological lignocellulose to ethanol technology is presented.The emphasis of discussion is especially on pretreatment,enzymatic/metabolic engineering,C6/C5 cofermentation,lignin utilization,and process optimization,which are of primary importance to the successful application and commercialization of lignoceellulose-based bioethanol technology.A consolidated lignocellulose-to-ethanol process model is proposed as conceptual improvement to the simultaneous saccharification and cofermentation(SSCF)model endorsed by U.S.DOE national renewable energy laboratory(NREL)and modified by various industrial applications.

Key words: bioenergy, ethanol, lignocellulose, bioconversion, fermentation