title: Novel application of cyclolipopeptide amphisin: feasibility study as additive to remediate polycyclic aromatic hydrocarbon (PAH) contaminated sediments.
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.
authors.affiliation: Laboratory of Cold Microbiology-Signals and Microenvironment, University of Rouen, EA 4312, 55 rue Saint Germain, 27000 Evreux, France; E-Mails: anne.groboillot@univ-rouen.fr (A.G.); marc.feuilloley@univ-rouen.fr (M.J.G.F.); nicole.orange@univ-rouen.fr (N.O.).
authors.forename: Anne
authors.initials: A
authors.lastname: Groboillot
authors.forename: Florence
authors.initials: F
authors.lastname: Portet-Koltalo
authors.forename: Franck
authors.initials: F
authors.lastname: Le Derf
authors.forename: Marc J G
authors.initials: MJ
authors.lastname: Feuilloley
authors.forename: Nicole
authors.initials: N
authors.lastname: Orange
authors.forename: Cécile Duclairoir
authors.initials: CD
authors.lastname: Poc
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D019015:Geologic Sediments / Q000737:chemistry* / Q000382:microbiology; D010456:Peptides, Cyclic / Q000378:metabolism*; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry / Q000378:metabolism*; D011551:Pseudomonas fluorescens / Q000378:metabolism; D012995:Solubility; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*
chemical_list: D010456:Peptides, Cyclic; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; C438267:amphisin; D014867:Water