抄録
A mucous polysaccharide, named Lilium-La-glucomannan, has been isolated from the bulbs of Lilium lancifolium THUNB. It was homogeneous on glass-fiber paper electrophoresis and by ultra centrifugal analysis. The component sugars of it were D-mannose and D-glucose in the molar ratio of 5 : 2, and its molecular weight was measured at 417000. The O-acetyl groups in the polysaccharide were identified and determined as the content of 1.2%. They are located in positions 2, 3, and 6 of a part of D-mannose units. Methylation, periodate oxidation and partial acetolysis studies suggested that the polysaccharide is mainly composed of β-1→4 linked aldohexopyranose residues and it contains about thirty aldohexose units per one end group on the average. D-Mannose units occupy non-redncing terminal positions and branch points linked through positions 2 and 3.
