Influence of copper-alloying of austenitic stainless steel on multi-species biofilm development
Influence of copper-alloying of austenitic stainless steel on multi-species biofilm development
复制标题
DOI：
10.1046/j.1472-765x.2001.00967.x
复制
发表时间：
2001-08-01
影响因子：
2.4
通讯作者：
Verstraete, W
中科院分区：
文献类型：
--
作者：
Kielemoes, J;Verstraete, W
目的：研究不锈钢铜合金对微生物定殖的杀菌影响。方法和结果：通过监测（192 小时）天然地表水中铜合金（3.72 wt%）不锈钢上多物种生物膜的形成来研究对细菌粘附的抑制。在暴露的前 120 小时内，与普通不锈钢相比，与含铜钢接触的水中的活细菌数量较少。此外，在暴露的前 48 小时内，粘附在铜合金钢上的生物膜中发现菌落数量较低。在剩余的实验期间没有发现较低的菌落或活菌计数。结论：钢基体中铜的存在在初始阶段（48小时）阻碍了微生物的粘附，而这种杀菌作用在较长的潜伏期后消失。研究的意义和影响：用于杀菌目的的铜合金不锈钢的应用应仅限于定期清洁的表面。
Aims: To investigate the bactericidal influence of copper-alloying of stainless steel on microbial colonization.Methods and Results: Inhibition of bacterial adherence was investigated by monitoring (192 h) the development of a multi-species biofilm on Cu-alloyed (3.72 wt%) stainless steel in a natural surface water. During the first 120 h of exposure, lower numbers of viable bacteria in the water in contact with copper-containing steel relative to ordinary stainless steel were observed. Moreover, during the first 48 h of exposure, lower colony counts were found in the biofilm adhering to the Cu-alloyed steel. No lower colony or viable counts were found throughout the remainder of the experimental period.Conclusions: The presence of Cu in the steel matrix impedes the adhesion of micro-organisms during an initial period (48 h), while this bactericidal effect disappears after longer incubation periods.Significance and Impact of the Study: The application of Cu-alloyed stainless steels for bactericidal purposes should be restricted to regularly-cleaned surfaces.