[1]赵浩浩,韩秀丽,常春,等.有机酸对纤维素酶解和纤维乙醇发酵的影响[J].郑州大学学报(工学版),2015,36(06):5.[doi:10.3969 / j. issn.1671 -6833.2015.06.002]
　HAN Xiuli,ZHAO Haohao,LU Feng,et al.Effect of Organic Acid on Enzymatic Hydrolysis and Cellulosic Ethanol Fermentation[J].Journal of Zhengzhou University (Engineering Science),2015,36(06):5.[doi:10.3969 / j. issn.1671 -6833.2015.06.002]
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有机酸对纤维素酶解和纤维乙醇发酵的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36卷
期数:
2015年06期
页码:
5
栏目:
出版日期:
2015-12-25

文章信息/Info

Title:
Effect of Organic Acid on Enzymatic Hydrolysis and Cellulosic Ethanol Fermentation
作者:
赵浩浩; 韩秀丽; 常春; 鲁峰; 何玉远
1.郑州大学化工与能源学院,河南郑州 450001;2.河南省周口市环境监测站,河南周口466002
Author(s):
HAN Xiuli1; ZHAO Haohao1; LU Feng2; CHANG Chun1; HE Yuyuan1
1.School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450001,China;2.Zhoukou EnvironmentalMonitoring Station,Zhoukou 466002,China
关键词:
纤维乙醇; 酶解; 发酵; 甲酸; 乙酸; 丙酸
Keywords:
cellulosic ethanol; enzymatic hydrolysis; fermentation; formic acid; acetic acid;  propanoic acid
分类号:
X703.1
DOI:
10.3969 / j. issn.1671 -6833.2015.06.002
文献标志码:
A
摘要:
纤维乙醇废水经过厌氧发酵生产沼气处理后,将其回用作为纤维乙醇发酵配料用水,从而实现纤维乙醇废水的回用.沼液中含有的甲酸﹑乙酸和丙酸等小分子有机酸是抑制酵母发酵的主要物质,考察了这些有机酸对纤维素酶解和酵母发酵的影响.研究表明:厌氧发酵废水中含有的甲酸、乙酸和丙酸对纤维素酶解具有影响,可通过调节酶解液的pH值而消除;甲酸﹑乙酸和丙酸对酵母发酵的抑制浓度分别为1.6,3.0,3.0 g/L.
Abstract:
The cellulosic ethanol wastewater was first treated by anaerobic digestion ( methane fermentation),and then the anaerobic digestion liquid was used as burden water on cellulosic ethanol fermentation,so that re-use of cellulosic ethanol wastewater could be realized. The small molecule organic acids in the anaerobic efflu-ent,mainly formic acid,acetic acid and propanoic acid,were potential inhibitors of ethanol fermentation. Theeffects of organic acids on enzymatic hydrolysis and yeast fermentation of cellulose were studied. The resultsshowed that the potential inhibitory effects of formic acid,acetic acid and propanoic acid on enzymatic hydrol-ysis could be avoided by controlling the medium pH.The inhibitory concentrations of formic acid,acetic acidand propanoic acid on yeast fermentation were 1.6,3.0 and 3.0 g/L,respectively.
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