{"title":"胞外聚合物抑制碳钢腐蚀的机理途径。","authors":"Ping Xu, Xinyue Chen, Weijin Xi","doi":"10.1080/08927014.2025.2483739","DOIUrl":null,"url":null,"abstract":"<p><p>This study examined the corrosion inhibition mechanisms of extracellular polymeric substances (EPS) from <i>Lactobacillus reuteri</i>, <i>Pseudomonas fluorescens</i>, and <i>Escherichia coli</i> on carbon steel. Using UV spectrophotometry, LC-MS, infrared spectroscopy, and atomic force microscopy (AFM), it was apparent that all three EPS effectively inhibited corrosion, with optimal concentrations of 300 mg/L for <i>Lactobacillus reuteri</i> and 400 mg/L for the other species, yielding inhibition efficiencies of 28.25%, 23.87%, and 21.72%, respectively. The carboxyl group content was critical, with <i>Lactobacillus reuteri</i> EPS having the highest proportion. Functional group analysis showed it contained 12.39% and 12.93% more carboxyl groups than those from <i>Pseudomonas fluorescens</i> and <i>Escherichia coli</i>. Iron ion adsorption was primarily physical and occurred in a monolayer, with a greater capacity for Fe³<sup>+</sup> than Fe<sup>2+</sup>, peaking at 600 mg/L.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-17"},"PeriodicalIF":2.6000,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The mechanistic pathways of extracellular polymeric substances in the inhibition of carbon steel corrosion.\",\"authors\":\"Ping Xu, Xinyue Chen, Weijin Xi\",\"doi\":\"10.1080/08927014.2025.2483739\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>This study examined the corrosion inhibition mechanisms of extracellular polymeric substances (EPS) from <i>Lactobacillus reuteri</i>, <i>Pseudomonas fluorescens</i>, and <i>Escherichia coli</i> on carbon steel. Using UV spectrophotometry, LC-MS, infrared spectroscopy, and atomic force microscopy (AFM), it was apparent that all three EPS effectively inhibited corrosion, with optimal concentrations of 300 mg/L for <i>Lactobacillus reuteri</i> and 400 mg/L for the other species, yielding inhibition efficiencies of 28.25%, 23.87%, and 21.72%, respectively. The carboxyl group content was critical, with <i>Lactobacillus reuteri</i> EPS having the highest proportion. Functional group analysis showed it contained 12.39% and 12.93% more carboxyl groups than those from <i>Pseudomonas fluorescens</i> and <i>Escherichia coli</i>. Iron ion adsorption was primarily physical and occurred in a monolayer, with a greater capacity for Fe³<sup>+</sup> than Fe<sup>2+</sup>, peaking at 600 mg/L.</p>\",\"PeriodicalId\":8898,\"journal\":{\"name\":\"Biofouling\",\"volume\":\" \",\"pages\":\"1-17\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-04-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biofouling\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1080/08927014.2025.2483739\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biofouling","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/08927014.2025.2483739","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
The mechanistic pathways of extracellular polymeric substances in the inhibition of carbon steel corrosion.
This study examined the corrosion inhibition mechanisms of extracellular polymeric substances (EPS) from Lactobacillus reuteri, Pseudomonas fluorescens, and Escherichia coli on carbon steel. Using UV spectrophotometry, LC-MS, infrared spectroscopy, and atomic force microscopy (AFM), it was apparent that all three EPS effectively inhibited corrosion, with optimal concentrations of 300 mg/L for Lactobacillus reuteri and 400 mg/L for the other species, yielding inhibition efficiencies of 28.25%, 23.87%, and 21.72%, respectively. The carboxyl group content was critical, with Lactobacillus reuteri EPS having the highest proportion. Functional group analysis showed it contained 12.39% and 12.93% more carboxyl groups than those from Pseudomonas fluorescens and Escherichia coli. Iron ion adsorption was primarily physical and occurred in a monolayer, with a greater capacity for Fe³+ than Fe2+, peaking at 600 mg/L.
期刊介绍：
Biofouling is an international, peer-reviewed, multi-discliplinary journal which publishes original articles and mini-reviews and provides a forum for publication of pure and applied work on protein, microbial, fungal, plant and animal fouling and its control, as well as studies of all kinds on biofilms and bioadhesion.
Papers may be based on studies relating to characterisation, attachment, growth and control on any natural (living) or man-made surface in the freshwater, marine or aerial environments, including fouling, biofilms and bioadhesion in the medical, dental, and industrial context.
Specific areas of interest include antifouling technologies and coatings including transmission of invasive species, antimicrobial agents, biological interfaces, biomaterials, microbiologically influenced corrosion, membrane biofouling, food industry biofilms, biofilm based diseases and indwelling biomedical devices as substrata for fouling and biofilm growth, including papers based on clinically-relevant work using models that mimic the realistic environment in which they are intended to be used.
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