Xyloglucan from the leaves of Hymenaea courbaril.

Busato, A P; Vargas-Rechia, C G; Reicher, F

Busato, A P; Vargas-Rechia, C G; Reicher, F.

Afiliación

Busato AP; Departmento de Bioquímica, Universidade Federal do Paraná, CP 19046, 81531-990, Curitiba, Paraná, Brazil.

Phytochemistry ; 58(3): 525-31, 2001 Oct.

Article en En | MEDLINE | ID: mdl-11557087

RESUMEN

A fucosylated xyloglucan was isolated from the leaves of Hymenaea courbaril by alkaline extraction, followed by ethanol precipitation and ion-exchange chromatography. The isolated polysaccharide showed Glc:Xyl:Gal:Fuc in molar ratio of 8:5:2.5:1 and (D)(25) +40.5 degrees. Composition and linkage analyses, supported by NMR spectroscopic measurements, showed that the polysaccharide has a glucan backbone which is highly substituted at O-6 with D-xylopyranose residues, about a half of which are substituted at O-2 by D-galactopyranosyl units. Some of the galactose residues are further substituted by L-fucopyranose at O-2. The M(r), as determined by HPSEC, was 49,500.

Asunto(s)

Fabaceae/química; Glucanos; Hojas de la Planta/química; Polisacáridos/aislamiento & purificación; Xilanos; Cromatografía en Gel; Cromatografía Líquida de Alta Presión; Espectroscopía de Resonancia Magnética; Polisacáridos/química

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polisacáridos / Xilanos / Hojas de la Planta / Glucanos / Fabaceae Idioma: En Revista: Phytochemistry Año: 2001 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido

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