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Int. J. Mol. Sci. 2011, 12(3), 1787-1806; doi:10.3390/ijms12031787
Article

Novel Application of Cyclolipopeptide Amphisin: Feasibility Study as Additive to Remediate Polycyclic Aromatic Hydrocarbon (PAH) Contaminated Sediments

1
, 2
, 2
, 1
, 1
 and 1,*
1 Laboratory of Cold Microbiology-Signals and Microenvironment, University of Rouen, EA 4312, 55 rue Saint Germain, 27000 Evreux, France 2 UMR 6014 COBRA, University of Rouen, 55 rue Saint Germain, 27000 Evreux, France
* Author to whom correspondence should be addressed.
Received: 3 November 2010 / Revised: 15 February 2011 / Accepted: 2 March 2011 / Published: 9 March 2011
(This article belongs to the Special Issue Biosurfactants)
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Abstract

To decontaminate dredged harbor sediments by bioremediation or electromigration processes, adding biosurfactants could enhance the bioavailability or mobility of contaminants in an aqueous phase. Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant. Amphisin production by the bacteria in the natural environment was also considered. DSS73’s growth is weakened by three model PAHs above saturation, but amphisin is still produced. Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.
Keywords: biosurfactant; solubility enhancement; polycyclic aromatic hydrocarbons; bioremediation; dredged sediments biosurfactant; solubility enhancement; polycyclic aromatic hydrocarbons; bioremediation; dredged sediments
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Groboillot, A.; Portet-Koltalo, F.; Le Derf, F.; Feuilloley, M.J.; Orange, N.; Duclairoir Poc, C. Novel Application of Cyclolipopeptide Amphisin: Feasibility Study as Additive to Remediate Polycyclic Aromatic Hydrocarbon (PAH) Contaminated Sediments. Int. J. Mol. Sci. 2011, 12, 1787-1806.

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