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Effect of proteases secreted from a marine isolated bacterium Bacillus vietnamensis on the corrosion behaviour of different alloys
Bioelectrochemistry ( IF 5 ) Pub Date : 2018-08-22 , DOI: 10.1016/j.bioelechem.2018.08.003
Masoumeh Moradi , Zhaohui Sun , Zhenlun Song , Haoqi Hu

The adverse corrosion and corrosion inhibitory effects of the marine isolated bacterium Bacillus vietnamensis were determined on different alloys. The corrosion rates of the steel alloys increased in the presence of Bacillu vietnamensis; although the alloys containing Cu were found to be protected from corrosion when exposed to this bacterium. The first assay bacterial mechanism confirmed the presence of protease enzyme, which was then identified by LC-MS/MS analysis. We proposed that Cu ions coordinated with proteases and bonded with water molecules. This coordination process decreased the oxygen availability in the environment, thereby inhibiting the corrosion of the copper alloys.



中文翻译:

海洋分离细菌越南芽孢杆菌分泌的蛋白酶对不同合金腐蚀行为的影响

确定了海洋分离细菌越南芽孢杆菌对不同合金的不利腐蚀和缓蚀作用。在越南杆菌的存在下,合金的腐蚀速率增加; 尽管发现含有铜的合金在暴露于这种细菌时可以防止腐蚀。第一种测定细菌机制证实了蛋白酶的存在,然后通过LC-MS / MS分析对其进行了鉴定。我们建议铜离子与蛋白酶配位并与水分子结合。这种配位过程降低了环境中的氧气供应,从而抑制了铜合金的腐蚀。

更新日期:2018-08-22
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