年处理10000t银杏叶废渣酶解糖化工厂设计研究进展
摘要：木质纤维素中存在的半纤维素和木质素会阻碍纤维素的酶解，从而降低纤维原料的酶解转化率。本文综述了木质纤维素原料的物理、化学、物理化学和生物的预处理方法，分析了木质纤维原料在内切葡聚糖酶、外切葡聚糖酶和?-葡萄糖苷酶三种纤维素酶的酶解作用，以及分步糖化和发酵、同时糖化和发酵、同时糖化和共发酵、联合生物加工这4种用于生产木质纤维素燃料乙醇的工艺方法。我国生物乙醇产业化艰难，主要存在着原料来源不稳定、预处理工艺复杂收率低、酶解成本高、高效工程酵母选育难等问题。
关键词：木质纤维素；预处理；酶解糖化；燃料乙醇
Research progress on the design enzymatic saccharification plant for annual treatment of 10000t ginkgo leaf residue
Zhou Fenghua
(Department of Food Science and Engineering, College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, China, 210037)
Abstract：Hemicellulose and Lignin in lignocellulose can hinder the enzymatic hydrolysis of cellulose, thus reducing the conversion rate of cellulose. This paper reviews the physical, chemical, physical chemistry and biological pretreatment methods of Lignocellulosic materials, the enzymatic hydrolysis of lignocellulosic materials by Endoglucanase, exo-glucanase and-glucosidase was analyzed, and four process methods for producing Lignocellulosic fuel ethanol, including step saccharification and fermentation, simultaneous saccharification and fermentation, simultaneous saccharification and co-fermentation, and combined biological processing. Bioethanol industrialization in China is difficult, mainly because of unstable raw material sources, low yield of complex pretreatment process, high cost of enzymatic hydrolysis and difficult breeding of high-efficiency engineering yeast.
Key words：Lignocellulose; pretreatment; enzymatic saccharification; Fuel ethanol
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