Galactomannan of the locoweed (Oxytropis lanata (Pallas) DC) seeds
Olennikov, D.N.; Rokhin, A.V.
Prikladnaia Biokhimiia i Mikrobiologiia 46(4): 486-490
2010
ISSN/ISBN: 0555-1099 PMID: 20873176 Document Number: 640106
Galactomannan with a molecular weight of 1976 kDa was isolated by hot water extraction from the locoweed (Oxytropis lanata (Pallas) DC) seeds (yield, 3.68% of the seed weight); its solutions display high viscosity: = 1697.7 ml/g and optical activity ɑD + 76.8 degrees. The polysaccharide consists of mannose and galactose residues at a molar ratio of 1.36 : 1. The backbone of galactomannan macromolecule is formed by 1,4-beta-D-mannopyranose residues, 73.5% of which are substituted with single alpha-D-galactopyranose residues at C-6.