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Bactericidal Efficacies of an Aquatic Disinfectant Tablet Composed to Calcium Hypochlorite Against Vibrio anguillarum and Streptococcus iniae

  • Cha, Chun-Nam (Engineering Research Institute, Department of Industrial Systems Engineering, Gyeongsang National University) ;
  • Lee, Yeo-Eun (Department of Environmental Health, Graduate School of Public Health, Gyeongsang National University) ;
  • Kang, In-Jin (Department of Environmental Health, Graduate School of Public Health, Gyeongsang National University) ;
  • Yoo, Chang-Yeul (Department of Computer Information, Gyeongnam Provincial Namhae College) ;
  • Choi, Hyun-Ju (Elderly Life Redesign Institute, Department of Biomedical Laboratory Science, Inje University) ;
  • Kim, Suk (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Lee, Hu-Jang (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
  • Received : 2012.06.16
  • Accepted : 2012.07.08
  • Published : 2012.09.30

Abstract

Vibrio spp. and Streptococcus spp. have caused a considerable disease of farmed fish and economic loss in fish farming and seafood industry. In this study, the efficacy of an aquatic disinfectant tablet composed to calcium hypochlorite was evaluated against V. anguillarum and S. iniae. A bactericidal efficacy test by broth dilution method was used to determine the lowest effective dilution of the disinfectant following exposure to test bacteria for 30 min at $4^{\circ}C$. An aquatic disinfectant tablet and test bacteria were diluted with distilled water (DW), hard water (HW) or organic matter suspension (OM) according to treatment condition. V. anguillarum on the DW, HW and OM condition was completely inactivated with 16,000 15,000 and 13,000 fold dilutions of the disinfectant, respectively. On the DW, HW and OM condition, S. iniae was absolutely inactivated with 17,000 16,000 and 14,000 fold dilutions of the disinfectant, respectively. As an aquatic disinfectant tablet possesses bactericidal efficacy against fish pathogenic bacteria such as V. anguillarum and S. iniae this disinfectant solution can be used to control the spread of fish infective bacterial diseases.

Keywords

References

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