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TY - JOUR AU - Djimeli, C. Lontsi AU - Arfao, A. Tamsa AU - Rossi, V AU - Nsulem, N AU - Raspal, V AU - Bricheux, G AU - Nola, M AU - Sime-Ngando, T. PY - 2016/02/10 Y2 - 2025/09/23 TI - Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm JF - Research in Biotechnology JA - RIB VL - 7 IS - 0 SE - Research Articles DO - 10.19071/rib.2016.v7.2981 UR - https://www.updatepublishing.com/journal/index.php/rib/article/view/2981 SP - AB - <p><strong>After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H₂O₂) 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/cm²). </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/Cm²)</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 H₂O₂ disinfected water, the highest value was recorded at all cells growth phases with 5‰ H₂O₂concentration. Adhered <em>E. faecalis</em> cells have been sometimes completely or partially decimated respectively by NaOCl and H₂O₂ 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> ER -