Abstract
Two homogeneous galactomannans were isolated from the seeds of
Cassia sericea and investigated by methylation analysis, periodate and CrO
3 oxidation,
1H- and
13C-n.m.r. spectroscopy, and reaction with α-
d-galactosidase. The polysaccharides had backbones of (1→3)- and occasional (1→4)-linked β-
d-mannopyranosyl residues and side chains, at positions 6, of single α-
d-galactopyranosyl groups. One of the polysaccharides also had a few non-reducing terminal mannosyl groups.