Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Effect of Sodium Hypochlorite on the Biofilms of Aeromonas hydrophila, Streptococcus mutans, and Yersinia enterocolitica

  • Youngseok Ham (Department of Forest Products and Biotechnology, College of Science and Technology, Kookmin University) ;
  • Han-Saem Park (Department of Forest Products and Biotechnology, College of Science and Technology, Kookmin University) ;
  • Minjun Kim (Department of Forest Products and Biotechnology, College of Science and Technology, Kookmin University) ;
  • Tae-Jong Kim (Department of Forest Products and Biotechnology, College of Science and Technology, Kookmin University)
  • Received : 2022.09.29
  • Accepted : 2023.01.08
  • Published : 2023.03.28
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Abstract

In this study, the effect of sodium hypochlorite on biofilm removal was evaluated using three bacterial strains; Aeromonas hydrophila, Streptococcus mutans, and Yersinia enterocolitica. For maximum biofilm removal in 10 min, sodium hypochlorite is required at 1.65, 0.83, and 0.41 g/l for A. hydrophila, S. mutans, and Y. enterocolitica, respectively. Resistance to sodium hypochlorite was increased by the biofilms of all three tested strains, while the change in bactericidal activity according to sodium hypochlorite concentration was strain-specific. Therefore, we aimed to determine the effective concentration of sodium hypochlorite required for hygiene, considering that higher concentrations are needed to remove biofilms than to kill cells.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF), a grant funded by the Korean government (MSIT) (No. 2021R1F1A1061888).

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