The polysaccharide fraction from Ceratozamia spinosa appears to be made up mainly by a chemically homogeneous polysaccharide but with a wide range of molecular weight. By NMR and chemical degradative methods, it is shown to consist essentially of a backbone of alternate B-D-GlcpA-(1 + and + &x-o-Manp_(l + units. On the 4 position of the latter, P-D-GlcpA residues are linked. End units of cr+Araf, /I-D-Xylp, cu-L-Rhap, and cY-L-3-OMe-Rhap are linked to C-3 and/or C-4 positions of B-D-GlcpA residues.
Structural investigation of Ceratozamia spinosa mucilage / Barone, Gaspare; Corsaro, MARIA MICHELA; DE CASTRO, Cristina; Lanzetta, Rosa; Mangoni, Lorenzo; Parrilli, Michelangelo. - In: CARBOHYDRATE RESEARCH. - ISSN 0008-6215. - STAMPA. - 260(1994), pp. 259-270.
Structural investigation of Ceratozamia spinosa mucilage
BARONE, GASPARE;CORSARO, MARIA MICHELA;DE CASTRO, CRISTINA;LANZETTA, ROSA;MANGONI, LORENZO;PARRILLI, MICHELANGELO
1994
Abstract
The polysaccharide fraction from Ceratozamia spinosa appears to be made up mainly by a chemically homogeneous polysaccharide but with a wide range of molecular weight. By NMR and chemical degradative methods, it is shown to consist essentially of a backbone of alternate B-D-GlcpA-(1 + and + &x-o-Manp_(l + units. On the 4 position of the latter, P-D-GlcpA residues are linked. End units of cr+Araf, /I-D-Xylp, cu-L-Rhap, and cY-L-3-OMe-Rhap are linked to C-3 and/or C-4 positions of B-D-GlcpA residues.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
