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| Plouguerné, Erwan; De Souza, Lauro M.; Sassaki, Guilherme L.; Hellio, Claire; Trepos, Rozenn; Da Gama, Bernardo A. P.; Pereira, Renato Crespo; Barreto-bergter, Eliana. |
| Unraveling new environmentally friendly antifouling (AF) agents is one of the major quests currently facing marine biotechnology. Marine macroalgae represent a rich source of new compounds with promising biological properties, including AF activity, but most of the macroalgal compounds studied to date are terpenoids or polyphenolics. The aim of this work was to investigate the possible AF role played by a usually neglected class of marine natural products: glycolipids (monogalactosyldiacylglycerols – MGDG, digalactosyldiacylglycerols – DGDG and sulfoquinovosyldiacylglycerols – SQDG) isolated from the Phaeophyceae Sargassum vulgare collected along the coast of south-eastern Brazil. Among the 18 extracts, fractions and sub-fractions tested, 3 sub-fractions... |
| Tipo: Text |
Palavras-chave: Sargassum vulgare; Glycoglycerolipids; Antifouling; Microfouling; Macroalgae. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00618/73053/72168.pdf |
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| Le Norcy, Tiffany; Niemann, Hendrik; Proksch, Peter; Tait, Karen; Linossier, Isabelle; Rehel, Karine; Hellio, Claire; Fay, Fabienne. |
| Since the banning of several families of compounds in antifouling (AF) coatings, the search for environmentally friendly AF compounds has intensified. Natural sources of AF compounds have been identified in marine organisms and can be used to create analogues in laboratory. In a previous study, we identified that dibromohemibastadin-1 (DBHB) is a promising AF molecule, leading to the inhibition of the activity of phenoloxidase, an enzyme involved in the attachment of mussels to surfaces. This paper describes the activity of the DBHB on biofilm formation and its detachment and on bacterial adhesion and communication: quorum sensing. DBHB has an anti-biofilm activity without affecting adhesion of marine and terrestrial bacteria at a dose of 10 mu M.... |
| Tipo: Text |
Palavras-chave: Biofouling; Biofilm; Bastadin derivative; Microfouling; Quorum sensing; Sponge. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00616/72813/72581.pdf |
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| Carteau, David; Vallee-rehel, Karine; Linossier, Isabelle; Quiniou, Francoise; Davy, Romain; Compere, Chantal; Delbury, Maxime; Fay, Fabienne. |
| The development of new antifouling coatings with respect to the marine environment is actually crucial. The aim of the present work is to concept an erodible paint formulated with biodegradable polyester as binders and which combines two modes of prevention: chemical and physical repelling of biofouling. This system is principally dedicated to disturb durable settlement of microfouling. Each component was chosen according to its specific properties: chlorhexidine is a bisdiguanide antiseptic with antibacterial activity, zinc peroxide is an inorganic precursor of high instable entities which react with seawater to create hydrogen peroxide, Tween 85 is a non ionic surfactant disturbing interactions between colonizing organisms and surface. Obtained results... |
| Tipo: Text |
Palavras-chave: Environmental coatings; Antifouling; Active substances; Microfouling. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00168/27923/27273.pdf |
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