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2017
Articles
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Acrylic-kaolinite composite hydrogels for controlled-release nitrogen fertilizers application
12 September 2018 -
Accounting for BIOfouling through established Protocols of quantification
19 January 2017, by Hugues BRISSETElaborer des méthodes de caractérisation et de quantification du biofouling pour fiabiliser les données d’entrée nécessaires au dimensionnement et à la maintenance des systèmes Energies Marines Renouvelables (EMR).
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Discrimination of four marine biofilm-forming bacteria by LC-MS metabolomics and influence of culture parameters
31 March 2017Most marine bacteria can form biofilms, and they are the main components of biofilms observed on marine surfaces. Biofilms constitute a widespread life strategy, as growing in such structures offers many important biological benefits. The molecular compounds expressed in biofilms and, more generally, the metabolomes of marine bacteria remain poorly studied. In this context, a nontargeted LC–MS metabolomics approach of marine biofilm-forming bacterial strains was developed. Four marine bacteria, Persicivirga (Nonlabens) mediterranea TC4 and TC7, Pseudoalteromonas lipolytica TC8, and Shewanella sp. TC11, were used as model organisms. The main objective was to search for some strain-specific bacterial metabolites and to determine how culture parameters (culture medium, growth phase, and mode of culture) may affect the cellular metabolism of each strain and thus the global interstrain metabolic discrimination. LC–MS profiling and statistical partial least-squares discriminant analyses showed that the four strains could be differentiated at the species level whatever the medium, the growth phase, or the mode of culture (planktonic vs biofilm). A MS/MS molecular network was subsequently built and allowed the identification of putative bacterial biomarkers. TC8 was discriminated by a series of ornithine lipids, while the P. mediterranea strains produced hydroxylated ornithine and glycine lipids. Among the P. mediterranea strains, TC7 extracts were distinguished by the occurrence of diamine derivatives, such as putrescine amides.
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Spatio-temporal variations of marine biofilm communities colonizing artificial substrata including antifouling coatings in contrasted coastal environments
1 December 2017 -
Characterization of Bisphenol A imprinted materials obtained by sol-gel technique
17 April 2018, by CaB -
Towards smart biocide-free antifouling strategies against marine bacteria : design of marine natural products analogues
20 September 2018, by Hugues BRISSET -
Numerical study on the evaluation of thermal and mechanical stresses during the welding of coated pipelines
3 October 2017, by YJ -
Primaire à base d’organosilanes pour l’amélioration de l’adhérence d’assemblages élastomère silicone-aluminium 6061
18 September 2018, by LB -
Nouvelle sonde fluorescente sélective et sensible pour la détection des ions Pb2+
17 April 2018, by CaB -
Numerical and Experimental Investigation of Surface Plasmon Resonance Excitation Using Whispering Gallery Modes in Bent Metal-Clad Single-Mode Optical Fiber
6 April 2018, by CaB