Resistance to chlorine of freshwater bacterial strains

被引:72
作者
Mir, J
Morato, J
Ribas, F
机构
[1] UNIV POLITECN CATALUNYA,DEPT OPT & OPTOMETRY,MICROBIOL LAB,TERRASSA 08222,BARCELONA,SPAIN
[2] SOC GEN AGUAS BARCELONA SA,BARCELONA,SPAIN
关键词
D O I
10.1111/j.1365-2672.1997.tb03292.x
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 [微生物学]; 0836 [生物工程]; 090102 [作物遗传育种]; 100705 [微生物与生化药学];
摘要
The disinfectant properties of chlorine have been known for centuries but in the last few years water chlorination has attracted some criticism due to its secondary effects and the increased resistance of bacterial strains to chlorine inactivation. In this paper the kinetics of inactivation by chlorine of different Gram-positive and Gram-negative bacterial strains isolated from chlorinated water is studied. The Gram-positive strains were more resistant to chlorine and the behaviour of some of them in the presence of chloramphenicol suggests either the synthesis of unique proteins or aggregation of the bacteria as mechanisms of resistance to inactivation. The concept of K-i, the inactivation rate constant, by comparison with K-s in Michaelis-Menten enzyme kinetics (considering enzymic saturation), or with K-s in Monod growth kinetics (considering limiting rates of transport and metabolism of substrates), may be an interesting parameter to define microbial resistance to disinfectants and toxics.
引用
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页码:7 / 18
页数:12
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