{"title":"Evaluating the importance of flavin-based electron shuttling in corrosion","authors":"Peiyu Ma , Di Wang , Dake Xu , Derek R. Lovley","doi":"10.1016/j.corsci.2025.112782","DOIUrl":null,"url":null,"abstract":"<div><div>Faster microbial corrosion of ferrous metals with flavin amendments has led to the common perception that flavins function as an electron shuttle for extracellular metal-to-microbe electron transfer. Direct examination of this possibility revealed that electron transfer from Fe<sup>0</sup> or X80 carbon steel to flavins or the humic acid analogue anthraquinone-2,6-disulfonate (AQDS) was orders of magnitude slower than proton reduction to H<sub>2</sub>. Stainless steel did not reduce shuttles. Electron shuttles could not serve as the electron donor for sulfate reduction. Riboflavin enhanced <em>Desulfovibrio vulgaris</em> growth on H<sub>2</sub>, suggesting that the primary impact of added flavins is acting as a nutrient.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112782"},"PeriodicalIF":7.4000,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X2500109X","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Faster microbial corrosion of ferrous metals with flavin amendments has led to the common perception that flavins function as an electron shuttle for extracellular metal-to-microbe electron transfer. Direct examination of this possibility revealed that electron transfer from Fe0 or X80 carbon steel to flavins or the humic acid analogue anthraquinone-2,6-disulfonate (AQDS) was orders of magnitude slower than proton reduction to H2. Stainless steel did not reduce shuttles. Electron shuttles could not serve as the electron donor for sulfate reduction. Riboflavin enhanced Desulfovibrio vulgaris growth on H2, suggesting that the primary impact of added flavins is acting as a nutrient.
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.
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