Skip to Main content Skip to Navigation
Theses

Distribution lipidique et voies métaboliques chez quatre bactéries gram-négatives hydrocarbonoclastes. Variation en fonction de la source de carbone

Abstract : The major aims of this study was to derive information on the effect of the carbon source on the lipid composition of the hydrocarbonoclastic Gram-negative bacteria Marinobacter hydrocarbonoclasticus, Marinobacter aquaeolei, Acinetobacter calcoaceticus and Pseudomonas oleovorans, establish the metabolic pathways of hydrocarbon degradation and to have to a better knowledge on the lipopolysaccharide Β-hydroxy acids of their external membrane. The first part of the work presents a qualitative and quantitative description of unbound, OH- labile and H+ labile lipids of M. hydrocarbonoclasticus as a function of the hydrocarbon structure used for growth (normal and branched alkanes, phenyl- and cyclohexyl-alkanes and a terminal olefin). The obtained results showed that the chemical structures of the lipids strongly correlated those of the fed hydrocarbons: appearance of significant and in some cases very important proportions of fatty acids derived from the degradation of these compounds. Β-hydroxy acids of the LPS are less sensitive to the change of the hydrocarbon structure. Β-n-12:0 is always dominant, the Β-hydroxy acids derived from the hydrocarbons can be incorporation to the LPS but constituted minor compounds.
Complete list of metadatas

https://pastel.archives-ouvertes.fr/tel-00009276
Contributor : Mohamed Soltani <>
Submitted on : Tuesday, May 17, 2005 - 8:56:50 PM
Last modification on : Tuesday, September 22, 2020 - 3:58:39 AM
Long-term archiving on: : Friday, April 2, 2010 - 9:48:19 PM

Identifiers

  • HAL Id : tel-00009276, version 1

Collections

Citation

Mohamed Soltani. Distribution lipidique et voies métaboliques chez quatre bactéries gram-négatives hydrocarbonoclastes. Variation en fonction de la source de carbone. Autre. Chimie ParisTech, 2004. Français. ⟨tel-00009276⟩

Share

Metrics

Record views

1715

Files downloads

7364