Biodegradation of free cyanide by the fungi Fusarium solani: relation to pH and cyanide speciation in solution

被引：3
作者：
Dumestre, A [1 ]
Bousserrhine, N [1 ]
Berthelin, J [1 ]
机构：
[1] UNIV NANCY 1,CTR PEDOL BIOL,CNRS UPR 6831,F-54501 VANDOEUVRE NANCY,FRANCE
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 325卷 / 02期
关键词：
cyanides; Fusarium solani; biodegradation; cyanide hydratase; pH; cyanhydric acid;
D O I：
10.1016/S1251-8050(97)83974-2
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Free cyanide biodegradation by Fusarium solani, a fungi isolated from cyanide-contaminated soils, involves a cyanide hydrolyzing enzyme, cyanide hydratase (EC 4.2.1.66). This enzyme specifically seems to convert cyanhydric acid (HCN) to formamide but not the cyanide ion (CN-). Hence, the rate of free cyanide biodegradation is a function of the equilibrium HCN/CN- in solution. A better understanding of cyanide hydratase properties allows the definition of optimal conditions of F. solani biodegradation activity, and the proposition of a biological treatment of cyanide-contaminated alkaline soils and effluents.
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收藏
页码：133 / 138
页数：6
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