| Titre : |
Carctérisation micribiologique des biofilms bactériens isolés à partir des canalisations d'eau potable dans la wilaya de Tipaza |
| Type de document : |
texte imprimé |
| Auteurs : |
Samah Tadinit, Auteur ; Meriem Benyoucef, Auteur ; Amina Lachache, Auteur |
| Editeur : |
Tipaza [Algérie] : Centre universitaire Morsli Abdellah - Tipaza- |
| Année de publication : |
2024/2025 |
| Importance : |
p.58 |
| Présentation : |
couv. en noir et blanc ., ill., fig.,tabl. |
| Format : |
30 cm |
| Accompagnement : |
CD |
| Note générale : |
Bibliographie: p44-52.
Annexes: p54-58. |
| Langues : |
Français (fre) |
| Catégories : |
Microbiologie
|
| Mots-clés : |
Bacterial biofilm drinking water network antibiotic resistance anti-biofilm Tipaza. |
| Index. décimale : |
579.50 |
| Résumé : |
This study is a continuation of previous research on microorganisms present in drinking water distribution systems in the Tipaza province, particularly in the municipalities of Douaouda, Hadjout, and Gouraya. The work is based on the revival of lyophilized bacterial strains isolated during a previous project led by Lachache A. (2024), which aimed to assess the microbiological contamination of these networks. The identified bacteria include Escherichia coli, Enterococcus durans, Bacillus cereus, Pseudomonas koreensis, and Streptococcus oralis, all known for their pathogenic potential and their ability to form biofilms. The biofilm-forming capacity was assessed in vitro using both qualitative (Congo Red Agar medium) and quantitative methods (96-well microplate assay with crystal violet staining). Results showed that all tested strains were capable of forming biofilms at varying levels, with particularly high densities observed for E. coli and S. oralis. Furthermore, antibiotic susceptibility tests (agar diffusion method) revealed strong resistance in S. oralis and P. koreensis, while E. coli and E. durans appeared more sensitive. The anti-biofilm effect of vitamin «C» was evaluated at two concentrations , showing a significant inhibition of biofilm formation, especially in S. oralis. These results suggest a correlation between biofilm formation and antibiotic resistance, while highlighting the potential of vitamin «C» as a natural anti-biofilm agent. |
Carctérisation micribiologique des biofilms bactériens isolés à partir des canalisations d'eau potable dans la wilaya de Tipaza [texte imprimé] / Samah Tadinit, Auteur ; Meriem Benyoucef, Auteur ; Amina Lachache, Auteur . - Tipaza [Algérie] : Centre universitaire Morsli Abdellah - Tipaza-, 2024/2025 . - p.58 : couv. en noir et blanc ., ill., fig.,tabl. ; 30 cm + CD. Bibliographie: p44-52.
Annexes: p54-58. Langues : Français ( fre)
| Catégories : |
Microbiologie
|
| Mots-clés : |
Bacterial biofilm drinking water network antibiotic resistance anti-biofilm Tipaza. |
| Index. décimale : |
579.50 |
| Résumé : |
This study is a continuation of previous research on microorganisms present in drinking water distribution systems in the Tipaza province, particularly in the municipalities of Douaouda, Hadjout, and Gouraya. The work is based on the revival of lyophilized bacterial strains isolated during a previous project led by Lachache A. (2024), which aimed to assess the microbiological contamination of these networks. The identified bacteria include Escherichia coli, Enterococcus durans, Bacillus cereus, Pseudomonas koreensis, and Streptococcus oralis, all known for their pathogenic potential and their ability to form biofilms. The biofilm-forming capacity was assessed in vitro using both qualitative (Congo Red Agar medium) and quantitative methods (96-well microplate assay with crystal violet staining). Results showed that all tested strains were capable of forming biofilms at varying levels, with particularly high densities observed for E. coli and S. oralis. Furthermore, antibiotic susceptibility tests (agar diffusion method) revealed strong resistance in S. oralis and P. koreensis, while E. coli and E. durans appeared more sensitive. The anti-biofilm effect of vitamin «C» was evaluated at two concentrations , showing a significant inhibition of biofilm formation, especially in S. oralis. These results suggest a correlation between biofilm formation and antibiotic resistance, while highlighting the potential of vitamin «C» as a natural anti-biofilm agent. |
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