不同类型铜合金板的杀菌特性

【目的】微生物对可接触表面的污染给公共卫生带来了极大的威胁。利用具有杀菌特性的铜及铜合金代替不锈钢等制品,可以降低消毒剂的使用和细菌的传播。【方法】通过分析3株金黄色葡萄球菌和2株大肠杆菌在铜及铜合金平板上的存活时间,对不同类型铜合金的杀菌特性进行了探索。【结果】铜合金平板的杀菌能力与其铜含量成正比;铜合金对同属细菌的杀菌能力相近,对不同属细菌则有一定差异;铜合金的杀菌效率与细菌对Cu2+抗性没有直接联系;铜合金杀菌的效率与细菌的细胞壁结构可能有很大关联。【结论】铜及铜合金是较好的杀菌材料。

Bactericidal properties of different copper alloys

Objective] Contamination of micro-organisms attached on surface materials is one of the greatest threats for public health. Using copper alloys to replace stainless steel can reduce the use of disinfectants and the spread of bacteria. Methods] In this study, the bactericidal abilities of different copper alloys through the survival of 3 Staphylococcus aureus and two Escherichia coli strains five different bacterial strains were investigated. Results] The results revealed that the bactericidal abilities of the copper alloys are positively related to the copper content; the survival of the bacteria belonging to the same genus are similar; there was not direct relation between the bactericidal efficiency of the copper alloys and copper-resistances; the bactericidal efficiency of the copper alloys appeared to correlate with the bacterial cell wall structures. Conclusion] The copper alloys are good materials with bactericidal abilities.