The role of phenazines in marine Pseudomonas aeruginosa microbiologically influenced corrosion against 316L stainless steel

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-11-18 DOI:10.1016/j.corsci.2024.112587

Yi Yang , Enze Zhou , Lingke Li , Xuqin Peng , Ye Huang , Chengying Jiang , Tingyue Gu , Fuhui Wang , Dake Xu

引用次数: 0

Abstract

The impact of various phenazines produced by Pseudomonas aeruginosa on microbiologically influenced corrosion (MIC) were investigated. Exogenous phenazines led to the biotic R_p data decrease from approximately 300 kΩ cm² to 100 kΩ cm² in 316L stainless steel MIC. Conversely, the R_p data demonstrated a significant increase for ∆phzA₂G₂ mutant (∼ 2000 kΩ cm²), which exhibited negligible expression of phenazines. The normalized MIC rate per sessile cell exhibited similar results. The mediated electron transfer (MET-MIC) mechanism was further confirmed by increased corrosion of 316L SS and X80 steel when 10 ppm phenazines was injected to the biotic media.

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吩嗪类化合物在海洋铜绿假单胞菌对 316L 不锈钢的微生物腐蚀中的作用

研究了铜绿假单胞菌产生的各种吩嗪类物质对微生物腐蚀（MIC）的影响。外源吩嗪导致 316L 不锈钢 MIC 的生物 Rp 数据从大约 300 kΩ cm2 降至 100 kΩ cm2。相反，ΔphzA2G2 突变体（2000 kΩ cm2）的 Rp 数据则显著增加，该突变体的酚嗪类表达量可忽略不计。每个无柄细胞的归一化 MIC 率也显示出类似的结果。当向生物介质中注入 10 ppm 的酚嗪类化合物时，316L SS 和 X80 钢的腐蚀加剧，进一步证实了介导电子传递（MET-MIC）机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.