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@article{Djimeli_Arfao_Rossi_Nsulem_Raspal_Bricheux_Nola_Sime-Ngando_2016, title={Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm}, volume={7}, url={https://www.updatepublishing.com/journal/index.php/rib/article/view/2981}, DOI={10.19071/rib.2016.v7.2981}, abstractNote={<p><strong>After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) on the detachment of <em>Enterococcus faecalis </em>from polythene fragments immersed in water under stationary and dynamic conditions was assessed. The abundance of planktonic cells was also evaluated. The density of <em>E. faecalis</em> adhered in absence of disinfectant fluctuated between 2 and 4 units (Log CFU/cm<sup>2</sup>). </strong><strong>After living in disinfected water, </strong><strong>the density of <em>E. faecalis</em> remained adhered to polythene sometimes reached 2 units (Log CFU/Cm<sup>2</sup>)</strong><strong>. </strong><strong>This highest abundance of cells remained adhered was recorded with cells coming from the lag, exponential and stationary growth phases in water treated with 0.5‰ NaOCl. In H<sub>2</sub>O<sub>2</sub> disinfected water, the highest value was recorded at all cells growth phases with 5‰ H<sub>2</sub>O<sub>2 </sub>concentration. Adhered <em>E. faecalis</em> cells have been sometimes completely or partially decimated respectively by NaOCl and H<sub>2</sub>O<sub>2</sub> treated water. Considering separately each experimental condition, it was noted that increasing the concentration of disinfectant caused a significant decrease (P≤0.01) in abundance of cells stay adhered after living in water disinfected by the two disinfectants. Changes in disinfectant concentrations in different experimental conditions had an impact on the detachment of <em>E. faecalis</em> cells from the substrates. </strong></p>}, journal={Research in Biotechnology}, author={Djimeli, C. Lontsi and Arfao, A. Tamsa and Rossi, V and Nsulem, N and Raspal, V and Bricheux, G and Nola, M and Sime-Ngando, T.}, year={2016}, month={Feb.} }