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Investigation of the antifouling constituents from the brown alga Sargassum muticum (Yendo) Fensholt ArchiMer
Bazes, Alexandra; Silkina, Alla; Douzenel, Philippe; Fay, Fabienne; Kervarec, Nelly; Morin, Dimitri; Berge, Jean-pascal; Bourgougnon, Nathalie.
One of the most promising alternatives to toxic heavy metal-based paints is offered by the development of antifouling coatings in which the active ingredients are compounds naturally occurring in marine organisms and operating as natural antisettlement agents. Sessile marine macroalgae are remarkably free from settlement by fouling organisms. They produce a wide variety of chemically active metabolites in their surroundings, potentially as an aid to protect themselves against other settling organisms. In this study, a dichloromethane extract from the brown seaweed Sargassum muticum was tested in situ and, after 2 months of immersion, showed less fouling organisms on paints in which the extract was included, compared to paints containing only copper after 2...
Tipo: Text Palavras-chave: Sargassum muticum; Palmitic acid; Dioctyl phthalate; Dichloromethane extract; Brown algae; Antifouling.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6601.pdf
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Taxonomic study and partial characterization of antimicrobial compounds from a moderately halophilic strain of the genus Actinoalloteichus BJM
Boudjelal,Farida; Zitouni,Abdelghani; Mathieu,Florence; Lebrihi,Ahmed; Sabaou,Nasserdine.
A moderately halophilic actinomycete strain designated AH97 was isolated from a saline Saharan soil, and selected for its antimicrobial activities against bacteria and fungi. The AH97 strain was identified by morphological, chemotaxonomic and phylogenetic analyses to the genus Actinoalloteichus. Analysis of the 16S rDNA sequence of strain AH97 showed a similarity level ranging between 95.8% and 98.4% within Actinoalloteichus species, with A. hymeniacidonis the most closely related. The comparison of the physiological characteristics of AH97 with those of known species of Actinoalloteichus showed significant differences. Strain AH97 showed an antibacterial and antifungal activity against broad spectrum of microorganisms known to be human and plant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Actinoalloteichus; Taxonomy; Biological activities; Structure; Dioctyl phthalate.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300002
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