Removal of Shewanella putrefaciens Biofilm by acidic electrolyzed water on food contact surfaces
2021
Yan, Jun | Xie, Jing
Shewanella putrefaciens is an important specific spoilage organism (SSO) in seafood under low-temperature storage and can form biofilms on seafood processing-related contact surfaces, which exacerbates seafood spoilage and causes food safety problems. The characterization of and dynamic change in biofilms formed by Shewanella putrefaciens on three seafood processing-related contact surfaces were investigated in this study. An effective strategy to eliminate mature biofilms by acidic electrolysis water (AEW) was provided. Shewanella putrefaciens can form biofilms on glass, stainless steel and polystyrene, which are closely connected with surface properties such as hydrophilicity/hydrophobicity and surface roughness. AEW can be an excellent choice to clean mature biofilms formed by S. putrefaciens. AEW at a concentration of 3 g/L can remove almost all biofilms on the three common food contact materials tested. There is a bactericidal effect on the biofilm, reducing the possibility of secondary contamination. This study will contribute to promoting the application of AEW for controlling biofilms during seafood processing.
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