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

Anne Groboillot (1) , Florence Portet-Koltalo (2) , Franck Le Derf (2) , Marc J G Feuilloley (1) , Nicole Orange (1) , Cécile Duclairoir Poc (1)

1 LMDF-SME - Laboratoire de Microbiologie du Froid – Signaux et Micro-Environnement
2 COBRA - Chimie Organique et Bioorganique : Réactivité et Analyse

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.

Domaines: Chimie organique; Chimie analytique

Anne Groboillot, Florence Portet-Koltalo, Franck Le Derf, Marc J G Feuilloley, Nicole Orange, et al.. Novel Application of Cyclolipopeptide Amphisin: Feasibility Study as Additive to Remediate Polycyclic Aromatic Hydrocarbon (PAH) Contaminated Sediments.. International Journal of Molecular Sciences, 2011, 12 (3), pp.1787-1806. ⟨10.3390/ijms12031787⟩. ⟨hal-00992062⟩