Abstract
Galactomannan, a water-soluble heteropolysaccharide, was isolated from the seed of a Far Eastern population of the ground honeysuckle Lotus corniculatus L. (yield, 1.65%). Analysis of this galactomannan showed that it consists of D-mannose and D-galactose residues (molar ratio, 1.22 : 1). Its aqueous solutions were characterized by a specific rotation [α]D= +84.1° and intrinsic viscosity [η] = 559 ml/g. Analysis of this heteropolysaccharide using chemical and enzymatic procedures, as well as IR and 13C NMR spectroscopy, showed that its main chain comprises 1,4-β-D-mannopyranose residues, 95.5% of which are substituted at C-6 with single residues of α-D-galactopyranose.
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