Consulta: subjectFacets:"Marine polysaccharide"
Registros recuperados: 2
Data/hora: 17/06/2024 17:09:53

Design Polysaccharides of Marine Origin: Chemical Modifications to Reach Advanced Versatile Compounds
Provedor de dados: 5
Autores: Chopin, Nathalie; Guillory, Xavier; Weiss, Pierre; Le Bideau, Jean; Colliec-jouault, Sylvia.
Polysaccharides are among the most abundant macromolecules on Earth. These polymers are easily obtained from various marine resources such as algae, microorganisms and crustacean shells. The structure of these natural carbohydrates is innovative and quite complex. Marine biopolymers represent key scaffolds toward large challenging fields, such as biomedical applications (glycosaminoglycans, regenerative medicine and drug delivery) and tailored biomaterials. Chemical modifications can be applied to modify their final properties in a specific purpose. New functional glycans are achievable and represent a real potential with their intrinsic biocompatibility and biodegradability. Hydroxyl groups are ubiquitous in polysaccharides structure and involved in most...
Tipo: Text
Palavras-chave: Alginates; Carrageenans; Chemical modification; Chitin; Chitosan; Grafting; Marine polysaccharide; Polymer.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00199/31027/29902.pdf

The marine bacteria Cobetia marina DSMZ 4741 synthesizes an unexpected K-antigen-like exopolysaccharide
Provedor de dados: 5
Autores: Lelchat, Florian; Cerantola, Stephane; Brandily, Christophe; Colliec-jouault, Sylvia; Baudoux, Anne-claire; Ojima, Takao; Boisset, Claire.
We have studied the exopolysaccharide produced by Cobetia marina DSMZ 4741, a marine bacterium isolated from coastal seawater. This strain is able to produce a polysaccharide in presence of carbon sources as glucose, mannitol and alginate. The maximum production occurs in aerobic condition, during the end of the exponential phase. The polymer is a non-viscous, acidic heteropolysaccharide of 270 kDa constituted of a repeating unit of: →2)-β-D-Ribf-(1→4)-[7,8-O-(Pyr)]-α-D-KDOp-(2→ This kind of chemical structure is generally related to K-antigen polysaccharide of pathogenic Escherichia coli strains. This is the first time this type of EPS is described from a marine bacterium. Moreover the polysaccharide exhibits a pyruvate substitution on its...
Tipo: Text
Palavras-chave: Bacterial exopolysaccharides; K-antigen; Cobetia marina; KDO; Marine polysaccharide.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00254/36494/35038.pdf