Lebleu, Nathalie and Roques, Christine and Aimar, Pierre
and Causserand, Christel
Role of the cell-wall structure in the retention of bacteria
by microfiltration membranes.
(2009)
Journal of Membrane Science, 326 (1). 178-185. ISSN 0376-7388
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(Document in English)
PDF ( Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 351kB |
Official URL: http://dx.doi.org/10.1016/J.MEMSCI.2008.09.049
Abstract
This experimental study investigates the retention of bacteria by porous membranes. The transfer of bacteria larger than the nominal pore size of microfiltration track-etched membranes has been studied for several kinds of bacterial strains. This unexpected transfer does not correlate to the hydrophobicity,neither to the surface charge of the microorganism, as suggested in previous reports. We conclude that,in our conditions, the kind of bacteria (Gram-positive or Gram-negative) is finally the most important parameter. As the distinction between those two types of bacteria is related to the cell-wall structure, we provide an experimental evidence, via the action of an antibiotic, that the cell-wall flexibility triggers the transfer of the bacteria through artificial membranes, when the pores are smaller in size than the cell.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S0376738808008806 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | Laboratoire de Génie Chimique - LGC (Toulouse, France) - Bioprocédés et systèmes microbiens (BioSyM) Adhésion Bactérienne et Formation de Biofilms (Toulouse, France) |
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Deposited On: | 11 Jun 2012 13:03 |
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