Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm
After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) on the detachment of Enterococcus faecalis from polythene fragments immersed in water under stationary and dynamic conditions was assessed. The abundance of planktonic cells was also evaluated. The density of E. faecalis adhered in absence of disinfectant fluctuated between 2 and 4 units (Log CFU/cm2). After living in disinfected water, the density of E. faecalis remained adhered to polythene sometimes reached 2 units (Log CFU/Cm2). 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‰ H2O2 concentration. Adhered E. faecalis 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 E. faecalis cells from the substrates.
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dig-cirad-fr-5852632022-04-15T14:16:08Z http://agritrop.cirad.fr/585263/ http://agritrop.cirad.fr/585263/ Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm. Lontsi Djimeli C., Tamsa Arfao A., Rossi Vivien, Nsulem N., Raspal V., Bricheux G., Nola M., Sime-Ngando Télesphore. 2016. Research in Biotechnology, 7 : 28-42.https://doi.org/10.19071/rib.2016.v7.2981 <https://doi.org/10.19071/rib.2016.v7.2981> Researchers Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm Lontsi Djimeli, C. Tamsa Arfao, A. Rossi, Vivien Nsulem, N. Raspal, V. Bricheux, G. Nola, M. Sime-Ngando, Télesphore eng 2016 Research in Biotechnology S50 - Santé humaine After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) on the detachment of Enterococcus faecalis from polythene fragments immersed in water under stationary and dynamic conditions was assessed. The abundance of planktonic cells was also evaluated. The density of E. faecalis adhered in absence of disinfectant fluctuated between 2 and 4 units (Log CFU/cm2). After living in disinfected water, the density of E. faecalis remained adhered to polythene sometimes reached 2 units (Log CFU/Cm2). 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‰ H2O2 concentration. Adhered E. faecalis 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 E. faecalis cells from the substrates. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/585263/1/2981-3586-5-PB.pdf text Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.19071/rib.2016.v7.2981 10.19071/rib.2016.v7.2981 info:eu-repo/semantics/altIdentifier/doi/10.19071/rib.2016.v7.2981 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.19071/rib.2016.v7.2981 |
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S50 - Santé humaine S50 - Santé humaine Lontsi Djimeli, C. Tamsa Arfao, A. Rossi, Vivien Nsulem, N. Raspal, V. Bricheux, G. Nola, M. Sime-Ngando, Télesphore Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
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After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) on the detachment of Enterococcus faecalis from polythene fragments immersed in water under stationary and dynamic conditions was assessed. The abundance of planktonic cells was also evaluated. The density of E. faecalis adhered in absence of disinfectant fluctuated between 2 and 4 units (Log CFU/cm2). After living in disinfected water, the density of E. faecalis remained adhered to polythene sometimes reached 2 units (Log CFU/Cm2). 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‰ H2O2 concentration. Adhered E. faecalis 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 E. faecalis cells from the substrates. |
format |
article |
topic_facet |
S50 - Santé humaine |
author |
Lontsi Djimeli, C. Tamsa Arfao, A. Rossi, Vivien Nsulem, N. Raspal, V. Bricheux, G. Nola, M. Sime-Ngando, Télesphore |
author_facet |
Lontsi Djimeli, C. Tamsa Arfao, A. Rossi, Vivien Nsulem, N. Raspal, V. Bricheux, G. Nola, M. Sime-Ngando, Télesphore |
author_sort |
Lontsi Djimeli, C. |
title |
Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
title_short |
Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
title_full |
Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
title_fullStr |
Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
title_full_unstemmed |
Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm |
title_sort |
impact of two disinfectants on detachment of enterococcus faecalis from polythene in aquatic microcosm |
url |
http://agritrop.cirad.fr/585263/ http://agritrop.cirad.fr/585263/1/2981-3586-5-PB.pdf |
work_keys_str_mv |
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