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.

引用

页码：133 / 138

页数：6

共 21 条

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