Adhesion of Escherichia Coli on Fragments of Some Environments Rocks in Aquatic Microcosm: Impact of PH and Biodegradable Organic Compound
International Journal of Microbiology and Biotechnology
Volume 2, Issue 3, August 2017, Pages: 139-147
Received: Mar. 9, 2017; Accepted: Mar. 18, 2017; Published: Apr. 26, 2017
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Olive Vivien Noah Ewoti, Hydrobiology and Environment Laboratory, University of Yaoundé 1, Faculty of Sciences, Yaoundé, Cameroon
Antoine Tamsa Arfao, Hydrobiology and Environment Laboratory, University of Yaoundé 1, Faculty of Sciences, Yaoundé, Cameroon; Laboratoire de Microbiologie et Biotechnologie, Saint Jérôme Polytechnique, Institut Universitaire Catholique Saint Jérôme de Douala, Cameroun
Chrétien Lontsi Djimeli, Hydrobiology and Environment Laboratory, University of Yaoundé 1, Faculty of Sciences, Yaoundé, Cameroon
Luciane Marlyse Moungang, Hydrobiology and Environment Laboratory, University of Yaoundé 1, Faculty of Sciences, Yaoundé, Cameroon
Robert Adjia, Laboratoire de Chimie, Saint Jérôme Polytechnique, Institut Universitaire Catholique Saint Jérôme de Douala, Cameroun
Moïse Nola, Hydrobiology and Environment Laboratory, University of Yaoundé 1, Faculty of Sciences, Yaoundé, Cameroon
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A study was conducted in the laboratory to assess the capacity of rocks immersed in water to reduce the abundance of Escherichia coli and evaluated the impact of pH and, Biodegradable Organic Compound on adhesion process. These rocks have been chosen according to their representation in the aquatic environment and their chemical composition. The used rocks were collected in four different regions of Cameroon (Central Africa). Rocks used were granite, basalt, micaschist and sandstone. The pH of the medium ranged between 3 and 13 C. U, and Biodegradable organic compound (BOC) concentrations were 0, 2.5, 5, 7.5, 10 and 15 g/l. The duration of the cell adhesion varied from 180 to 1440 min. The highest acidic and basic pH very significantly increases the cells adhesion rate on the substrates (P<0.01). Moreover, when the BOC varies, the average abundances of E. coli cells adhered over time ranged from 8.5 x 103 ± 7.5 to 57.3 x 103 ± 11.2 CFU/cm2 on the micaschist, 2.9 x 103 ± 3.1 to 81.8 x 103 ± 14.6 CFU/cm2 on the granite, 3.9 x 103 ± 5.9 to 154 x 103 ± 18.1 CFU/cm2 on the sandstone, and from 3.6 x 103 ± 5.2 to 184 x 103 ± 21.5 CFU/cm2 on the basalt fragments. Therefore, these two parameters should be considered in the methods of treatment of drinking water.
Escherichia Coli, Cell Adhesion, Rocks, Biodegradable Organic Compound, PH
To cite this article
Olive Vivien Noah Ewoti, Antoine Tamsa Arfao, Chrétien Lontsi Djimeli, Luciane Marlyse Moungang, Robert Adjia, Moïse Nola, Adhesion of Escherichia Coli on Fragments of Some Environments Rocks in Aquatic Microcosm: Impact of PH and Biodegradable Organic Compound, International Journal of Microbiology and Biotechnology. Vol. 2, No. 3, 2017, pp. 139-147. doi: 10.11648/j.ijmb.20170203.16
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