Mixture of Sodium Hypochlorite and Hydrogen Peroxide on Adhered Aeromonas hydrophila to Solid Substrate in Water: Impact of Concentration and Assessment of the Synergistic Effect - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue International Journal of Bacteriology Année : 2014

Mixture of Sodium Hypochlorite and Hydrogen Peroxide on Adhered Aeromonas hydrophila to Solid Substrate in Water: Impact of Concentration and Assessment of the Synergistic Effect

Résumé

The synergistic effects of the combined treatments of NaOCl and H 2 O 2 on the elimination of A. hydrophila adhered to polythene under static and dynamic conditions were evaluated. The concentrations 0.1, 0.2, and 0.3‰ NaOCl and 0.5, 1, and 1.5‰ H 2 O 2 were used. The contact periods were 180, 360, 540, and 720 minutes. The abundance of cells adhered reached 2.47 and 2.27 units (log (CFU/cm 2)), respectively, under static and dynamic conditions after action of the mixture of disinfectants, whereas it reached 2.41 and 3.39 units (log (CFU/cm 2)) after action of NaOCl and H 2 O 2 alone, respectively. Increase in the incubation period resulted in a significant decrease in the abundance of cells adhered when the mixture of 0.3‰ NaOCl and 1.5‰ H 2 O 2 was used (í µí±ƒ < 0.01). For each cell growth phase, there was a significant difference amongst the mean densities of cells adhered after action of the mixture of disinfectants (í µí±ƒ < 0.05). Although the Freundlich isotherm parameters relatively varied from one experimental condition to another, the í µí°¾ í µí±“ value registered in the exponential growth phase was relatively higher in static state than in dynamic regime; cells adhered under dynamic condition seem more sensitive to the synergistic action than those adhered under static condition.

Domaines

Bactériologie
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Dates et versions

hal-01983212 , version 1 (23-01-2019)

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Chrétien Lontsi Djimeli, Antoine Tamsa Arfao, Olive V Noah Ewoti, Mireille Ebiane Nougang, Marlyse L Moungang, et al.. Mixture of Sodium Hypochlorite and Hydrogen Peroxide on Adhered Aeromonas hydrophila to Solid Substrate in Water: Impact of Concentration and Assessment of the Synergistic Effect. International Journal of Bacteriology, 2014, 2014, pp.121367. ⟨10.1155/2014/121367⟩. ⟨hal-01983212⟩
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