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生物质化学工程 ›› 2015, Vol. 49 ›› Issue (4): 25-30.doi: 10.3969/j.issn.1673-5854.2015.04.005

• 研究报告 • 上一篇    下一篇

橡子粉同步液化糖化产燃料乙醇的发酵条件优化

张宁, 蒋剑春, 杨静, 卫民, 赵剑, 陈水根   

  1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室;国家林业局 林产化学工程重点 开放性实验室; 江苏省 生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2015-03-12 出版日期:2015-07-30 发布日期:2015-10-12
  • 通讯作者: 蒋剑春(1955—),男,研究员,博士,博士生导师,从事林产化学加工和生物质能源开发技术研究;E-mail:bio-energy@163.com。 E-mail:bio-energy@163.com
  • 作者简介:张宁(1978—),女,副研究员,博士,主要从事生物质能源及工业微生物研究工作
  • 基金资助:
    "十二五"国家科技支撑计划资助(2014BAD02B02);江苏省自然科学基金资助项目(BK2012515);国家自然科学基金资助项目(31100429)

Fermentation Optimization of Fuel Ethanol Producing by Simultaneous Liquefaction,Saccharification and Fermentation from Acorn Flour

ZHANG Ning, JIANG Jian-chun, YANG Jing, WEI Min, ZHAO Jian, CHEN Shui-gen   

  1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2015-03-12 Online:2015-07-30 Published:2015-10-12

摘要: 以除去单宁的橡子粉为原料,应用活性干酵母同步液化糖化发酵(SLSF)制备燃料乙醇,并通过单因素试验和正交试验优化发酵条件。结果表明,同步液化糖化发酵技术适用于橡子粉发酵制备燃料乙醇;发酵的最佳条件为:除去单宁的橡子粉20 g,料液比为1:3(g:mL),淀粉酶100 U/g,糖化酶3 750 U/g,活性干酵母1.50%;在30 ℃静止发酵120 h,发酵液中的乙醇质量浓度达到106.5 g/L,橡子淀粉的乙醇转化率达到89.36 %。采用橡子粉发酵法制备燃料乙醇与以玉米等粮食作物为原料制备的燃料乙醇质量浓度相当,可以替代粮食作物生产燃料乙醇。

关键词: 橡子, 同步液化糖化发酵, 燃料乙醇

Abstract: The fuel ethanol was produced from acron flour by simultaneous liquefaction,saccharification and fermentation (SLSF).The optimum conditions of fermentation by SLSF technology were determined through single factor experiments and orthogonal experiments.The results showed that SLSF technology was suitable for the ethanol fermentation from acorn flour.The optimum conditions were 20 g acorn flour removed of tannin,the ratio of materials to water 1:3,amylase 100 U/g,glucoamylase 3 750 U/g and active dry yeast 1.50%.The ethanol concentration of fermentation broth reached 106.5 g/L after static fermentation for 120 h at 30 ℃,and the conversion rate of acorn starch into ethanol reached 89.36%.The ethanol concentration of fermentation liquor by simultaneous liquefaction,saccharification and fermentation was comparable to the ethanol concentration fermented by corn and other food crops.

Key words: acorn flour, simultaneous liquefaction,saccharification and fermentation, fuel ethanol

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