Marine Vibrio spp. protect carbon steel against corrosion through secreting extracellular polymeric substances

Abstract The protection of marine materials against corrosion using bacterial biofilms is a promising strategy. However, little known about the mechanisms this attractive prevention method. In work, behaviors X80 carbon steel (CS) in presence three different Vibrio species were studied. results demonstrated that all spp. displayed significant with weight loss reduction up to 68%. Moreover, their performance was tightly related abilities form biofilms, which order sp. EF187016 > alginolyticus parahaemolyticus . To further investigate mechanism caused by extracellular polymeric substances (EPS) extracted and added 3.5 wt% NaCl for abiotic testing. suggested EPS inhibited corrosion, means can play role biofilm.