Consulta: subjectFacets:"Sargassum muticum"
Registros recuperados: 5
Data/hora: 10/06/2024 08:13:52

Valorization of the Macroalgae Sargassum Muticum by Enzymatic Hydrolysis, Interest of Surfactants to Improve the Extraction of Phlorotannins and Polysaccharides
Provedor de dados: 5
Autores: Vandanjon, Laurent; Vallet, Laurent; Le Glatin, Titouan; Deleris, Paul; Baron, Regis; Bourseau, Patrick; Dumay, Justine.
The use of surfactants to improve enzymatic hydrolysis of the macroalgae Sargassum muticum has been investigated. Visible absorption spectroscopy has been used to quantify the solubilization of both polysaccharides and phlorotannins in the hydrolysates.   After total extraction, results showed that Sargassum muticum contained 2.74% (expressed in percent of the dry weight of the algae) of phlorotannins whose 32 % were in the cell wall. This result shows that it is important to access to the parietal phlorotannins. To reach this objective, we chose the enzymatic approach for destructurating the cell wall of the algae. The use of 5% dry weight (DW - 5% by weight of hydrolyzed algae) of an enzymatic mix containing a commercial beta-glucanase, a commercial...
Tipo: Text
Palavras-chave: Brown macroalgae; Sargassum muticum; Enzymatic hydrolysis; Surfactants; Phlorotannins.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00350/46105/46073.pdf

Assessment of the spatial variability of phenolic contents and associated bioactivities in the invasive alga Sargassum muticum sampled along its European range from Norway to Portugal
Provedor de dados: 5
Autores: Tanniou, A.; Vandanjon, L.; Incera, M.; Serrano Leon, Esteban; Husa, V.; Le Grand, Jacqueline; Nicolas, Jean-louis; Poupart, N.; Kervarec, N.; Engelen, A.; Walsh, R.; Guerard, F.; Bourgougnon, N.; Stiger-pouvreau, Valerie.
Sargassum muticum, an invasive brown macroalga presently distributed along European Atlantic coasts from southern Portugal to the south coast of Norway, was studied on a large geographical scale for its production of phenolic compounds with potential industrial applications and their chemical and biological activities. S. muticum can produce high biomass in Europe, which could be exploited to supply such compounds. S. muticum was collected in Portugal, Spain, France, Ireland and Norway (three sites/country) to examine the effect of the latitudinal cline and related environmental factors. Assays focused particularly on polyphenols and their activities. Crude acetone–water extracts were purified using solid phase extraction (SPE) and antioxidant and...
Tipo: Text
Palavras-chave: Antioxidant activities; Antibacterial activities; Latitudinal gradient; Phenolic compounds; Solid phase extraction; Sargassum muticum.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00171/28221/32175.pdf

L'algue japonaise Sargassum muticum (Yendo) fensholt. Caractéristiques et répartition
Provedor de dados: 5
Autores: Loraine, Isabelle.
Sargassum muticum is a Japanese alga from the pheophycee class which has been introduced in Europe about fifteen years ago. It has greatly developed on account of its intrinsic characteristics (adaptation, growth speed, reproduction mode, etc...) and the favorable conditions it has encountered. The nuisance it generates can be very high but no efficient fighting solution has been found yet. Only mechanical means can be considered on a one off basis in areas where eradication is indispensable. Any development is faced with the problem of pick up costs. However the most interesting development for Sargassum muticum would be to utilize it as flocculent for suspended organic substances.  Location updates for Sargassum muticum in France in 1989 did not show any...
Tipo: Text
Palavras-chave: Teledetection; Seaweed; Sargassum muticum; Télédétection; Algue; Sargassum muticum.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1656.pdf

Investigation of the antifouling constituents from the brown alga Sargassum muticum (Yendo) Fensholt
Provedor de dados: 5
Autores: 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

Janua (Dexiospira) Brasilliensis (Grube) (Polychaeta: Spirorbidae) : a new record from the South-West Netherlands
Provedor de dados: 16
Autores: Critchley, A.T.; Thorp, C.H.
A new record in the distribution of the immigrant spirorbid Janua (Dexiospira) brasiliensis is reported from Dutch waters. This is only the second European locality for the serpulid worm, otherwise known from warmer latitudes. J. (D.) brasiliensis (Grube) was found associated with the marine angiosperm Zostera marina L. and the exotic brown alga Sargassum muticum (Yendo) Fensholt, within the protected environment of a saline canal in the south-west Netherlands.
Tipo: Article / Letter to the editor
Palavras-chave: Polychaeta; Spirorbidae; Janua (Dexiospira) brasiliensis; Brown Algae; Sargassum muticum; Zostera marina; Invasive biota; Biogeography.; 42.76.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/317274