Artículo
Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
Perez Recalde, Maria Mercedes
; Canelon Gonzalez, Dilsia Josefina; Compagnone, Reinaldo S.; Matulewicz, Maria Cristina
; Cerezo, Alberto
; Ciancia, Marina
Fecha de publicación:
01/2016
Editorial:
Elsevier
Revista:
Carbohydrate Polymers
ISSN:
0144-8617
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The galactan system biosynthesized by the red seaweed Gymnogongrus tenuis (Phyllophoraceae) is con-stituted by major amounts of /-carrageenans, with predominance of -structures, which were isolatedby extraction with hot water in high yield (∼45%). A small amount of non-cyclized carrageenans mostlyof the -type was also obtained. Besides, 12% of these galactans are agaran structures, which were presentin major quantities in the room temperature water extracts, but they were also found in the hot waterextract. They are constituted by 3-linked -d-galactose units partially substituted on C-6 with sulfate orsingle stubs of -d-xylose and 4-linked residues that comprise -l-galactose units partially sulfated ormethoxylated on C-3 or sulfated on C-3 and C-6 and 3,6-anhydro--l-galactose. Related structural pat-terns were previously found for agarans synthesized by other carrageenophytes. Results presented hereshow that these agarans are low molecular weight molecules independent of the carrageenan structures,with strong interactions between them.
Palabras clave:
Sulfated Galactan
,
Polysaccharide Structure
,
Carrageenan
,
Agaran
,
Red Seaweed
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Colecciones
Articulos(CIHIDECAR)
Articulos de CENTRO DE INVESTIGACIONES EN HIDRATOS DE CARBONO
Articulos de CENTRO DE INVESTIGACIONES EN HIDRATOS DE CARBONO
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Perez Recalde, Maria Mercedes; Canelon Gonzalez, Dilsia Josefina; Compagnone, Reinaldo S.; Matulewicz, Maria Cristina; Cerezo, Alberto; et al.; Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis; Elsevier; Carbohydrate Polymers; 136; 1-2016; 1370-1378
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