INVESTIGADORES
FERNANDEZ CIRELLI Alicia
artículos
Título:
Occurrence of D arabino hexulosonic acid in polysaccharides from Cyttaria species
Autor/es:
A. FERNÁNDEZ CIRELLI; E. OLIVA; R. MUCHNIK DE LEDERKREMER
Revista:
PHYTOCHEMISTRY
Editorial:
Pergamon
Referencias:
Lugar: Oxford; Año: 1989 vol. 28 p. 1645 - 1647
ISSN:
0031-9422
Resumen:
A heteropolysaccharide (CD1) was isolated by water extraction from Cyttaria darwinii, a parasite of Nothofagus spp., in 32% yield. The only neutral sugar component was d-glucose (94%), the other component being d-arabino-hexulosonic acid, a sugar acid not normally found in polysaccharides. The linkages between the glucosyl groups were determined by methylation analysis and the anomeric configurations by chromium trioxide oxidation of the acetylated polysaccharide. 13C NMR spectroscopy proved to be useful in determining structural similarities between CD1 and CH1, isolated from the related species C. harioti.
