Evaluation of biological and enzymatic quorum quencher coating additives to reduce biocorrosion of steel

Siqian Huang, Celine Bergonzi, Michael Schwab, Mikael H Elias, Randall E Hicks

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Microbial colonization can be detrimental to the integrity of metal surfaces and lead to microbiologically influenced corrosion (MIC). Biocorrosion is a serious problem for aquatic and marine industries in the world. In Minnesota (USA), where this study was conducted, biocorrosion severely affects the maritime transportation industry. The anticorrosion activity of a variety of compounds, including chemical (magnesium peroxide) and biological (surfactin, capsaicin, and gramicidin) molecules were investigated as coating additives. We also evaluated a previously engineered, extremely stable, non-biocidal enzyme known to interfere in bacterial signaling, SsoPox (a quorum quenching lactonase). Experimental steel coupons were submerged in water from the Duluth Superior Harbor (DSH) for 8 weeks in the laboratory. Biocorrosion was evaluated by counting the number and the coverage of corrosion tubercles on coupons and also by ESEM imaging of the coupon surface. Three experimental coating additives significantly reduced the formation of corrosion tubercles: surfactin, magnesium peroxide and the quorum quenching lactonase by 31%, 36% and 50%, respectively. DNA sequence analysis of the V4 region of the bacterial 16S rRNA gene revealed that these decreases in corrosion were associated with significant changes in the composition of bacterial communities on the steel surfaces. These results demonstrate the potential of highly stable quorum quenching lactonases to provide a reliable, cost-effective method to treat steel structures and prevent biocorrosion.

Original languageEnglish (US)
Article numbere0217059
JournalPloS one
Volume14
Issue number5
DOIs
StatePublished - May 2019

Fingerprint

Corrosion
Steel
corrosion
steel
Quorum Sensing
coatings
surfactin
Quenching
Coatings
peroxides
Industry
magnesium
sea transportation
gramicidin
industry
microbial colonization
Gramicidin
capsaicin
Chemical compounds
quorum sensing

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

Cite this

Evaluation of biological and enzymatic quorum quencher coating additives to reduce biocorrosion of steel. / Huang, Siqian; Bergonzi, Celine; Schwab, Michael; Elias, Mikael H; Hicks, Randall E.

In: PloS one, Vol. 14, No. 5, e0217059, 05.2019.

Research output: Contribution to journalArticle

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