The characteristics and enzyme activities of 4-chlorophenol biodegradation by Fusarium sp.

被引：35
|
作者：
Li, Jiwu [1 ]
Cai, Weijian [1 ]
Zhu, Ling [1 ]
机构：
[1] Zhejiang Gongshang Univ, Coll Food & Biol Engn, Coll Environm Sci & Engn, Hangzhou 310012, Zhejiang, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 03期
关键词：
4-Chlorophenol biodegradation; Chlorocatechol 1,2-dioxygenase; Chlorocatechol 2,3-dioxygenase; Fusarium sp HJ01; HALOGENATED AROMATIC-COMPOUNDS; CHEMICAL-STRUCTURE; CHLOROPHENOLS; DEGRADATION; CATECHOL; PHENOL;
D O I：
10.1016/j.biortech.2010.10.006
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The effects of pH, temperature and sucrose addition on biodegradative capacity of Fusarium sp. HJ01 for 4-chlorophenol (4-CP) were examined, the property of dioxygenases produced by Fusarium sp. HJ01 during 4-CP degradation was investigated. The results show that Fusarium sp. HJ01 has a high capacity on degrading 4-CP in solution. The optimum values of pH, sucrose concentration and temperature are pH 7,1 g/L and 30 degrees C, respectively. The strain can produce chlorocatechol 1,2-dioxygenase (CC120) and chlorocatechol 2,3-dioxygenase (CC230), which show the highest activities when 4-CP is used as the sole carbon source and energy, and the optimal values of pH and temperature are pH 7 and 50 degrees C for CC120 as well as pH 8 and 60 degrees C for CC230. The kinetics of enzyme-catalyzed reactions accord with the Michaelis-Menten equation. To our knowledge, this is the first study on biodegradation of 4-CP by Fusarium sp. HJ01. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2985 / 2989
页数：5
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