Diffusion in immobilized-cell agar layers: influence of bacterial growth on the diffusivity of potassium chloride
Identifieur interne : 000B82 ( Istex/Curation ); précédent : 000B81; suivant : 000B83Diffusion in immobilized-cell agar layers: influence of bacterial growth on the diffusivity of potassium chloride
Auteurs : Laurent Mignot [France] ; Guy-Alain Junter [France]Source :
- Applied Microbiology and Biotechnology [ 0175-7598 ] ; 1990-05-01.
Abstract
Summary: The diffusitivity of potassium chloride in composite agar slab/microporous membrane structures loaded with various amounts of Escherichia coli whole cells was determined using both time-lag and steady-state methods. The diffusion coefficient of KCl decreased linearly with the logarithm of the immobilized-cells content. The effect exerted by bacterial growth inside the immobilization matrices on KCl diffusivity was then investigated. The diffusion coefficient of KCl obtained by time-lag analysis decreased during incubation of the immobilized-cell structures, whereas less consitent results arose from the steady-state method. An apparent doubling time for immobilized E. coli, increasing with the initial cell content of the gel, was obtained from the calibration relationship between KCl diffusivity and the number of organisms in agar.
Url:
DOI: 10.1007/BF00176519
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Diffusion in immobilized-cell agar layers: influence of bacterial growth on the diffusivity of potassium chloride</title><author><name sortKey="Mignot, Laurent" sort="Mignot, Laurent" uniqKey="Mignot L" first="Laurent" last="Mignot">Laurent Mignot</name><affiliation wicri:level="1"><mods:affiliation>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex</wicri:regionArea></affiliation></author><author><name sortKey="Junter, Guy Alain" sort="Junter, Guy Alain" uniqKey="Junter G" first="Guy-Alain" last="Junter">Guy-Alain Junter</name><affiliation wicri:level="1"><mods:affiliation>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:E53F927E38B2B91E44BB1A6726B497477765386F</idno><date when="1990" year="1990">1990</date><idno type="doi">10.1007/BF00176519</idno><idno type="url">https://api.istex.fr/document/E53F927E38B2B91E44BB1A6726B497477765386F/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000B82</idno><idno type="wicri:Area/Istex/Curation">000B82</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Diffusion in immobilized-cell agar layers: influence of bacterial growth on the diffusivity of potassium chloride</title><author><name sortKey="Mignot, Laurent" sort="Mignot, Laurent" uniqKey="Mignot L" first="Laurent" last="Mignot">Laurent Mignot</name><affiliation wicri:level="1"><mods:affiliation>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex</wicri:regionArea></affiliation></author><author><name sortKey="Junter, Guy Alain" sort="Junter, Guy Alain" uniqKey="Junter G" first="Guy-Alain" last="Junter">Guy-Alain Junter</name><affiliation wicri:level="1"><mods:affiliation>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Macromolecular Chemistry, URA CNRA No. 500, University of Rouen, PO Box 118, F-76134, Mont-Saint-Aignan Cédex</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Applied Microbiology and Biotechnology</title><title level="j" type="abbrev">Appl Microbiol Biotechnol</title><idno type="ISSN">0175-7598</idno><idno type="eISSN">1432-0614</idno><imprint><publisher>Springer-Verlag</publisher><pubPlace>Berlin/Heidelberg</pubPlace><date type="published" when="1990-05-01">1990-05-01</date><biblScope unit="volume">33</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="167">167</biblScope><biblScope unit="page" to="171">171</biblScope></imprint><idno type="ISSN">0175-7598</idno></series><idno type="istex">E53F927E38B2B91E44BB1A6726B497477765386F</idno><idno type="DOI">10.1007/BF00176519</idno><idno type="ArticleID">BF00176519</idno><idno type="ArticleID">Art9</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0175-7598</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Summary: The diffusitivity of potassium chloride in composite agar slab/microporous membrane structures loaded with various amounts of Escherichia coli whole cells was determined using both time-lag and steady-state methods. The diffusion coefficient of KCl decreased linearly with the logarithm of the immobilized-cells content. The effect exerted by bacterial growth inside the immobilization matrices on KCl diffusivity was then investigated. The diffusion coefficient of KCl obtained by time-lag analysis decreased during incubation of the immobilized-cell structures, whereas less consitent results arose from the steady-state method. An apparent doubling time for immobilized E. coli, increasing with the initial cell content of the gel, was obtained from the calibration relationship between KCl diffusivity and the number of organisms in agar.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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