Detailed Examination of the Branched Structure of Konjac Glucomannan
1980 年 44 巻 2 号 p. 245-252
詳細
1980 年 44 巻 2 号 p. 245-252
Konjac glucomannan, a reserve polysaccharide from Amorphophallus koniac tubers was isolated in a homogeneous state and is known to contain D-mannose and D-glucose in a molar ratio of 1.6:1. Survival of some monosaccharides after the periodata oxidation and subsequent reduction of knojac glucomannan suggested that it was composed mainly of β-1, 4 linkages, however, there was some branching in the polysaccharide. By analysis of the hydrolyzate of the permethylated sample by GC-MS, the branching structure through C3 of both D-mannose and D-glucose residues was confirmed. Yields of O-methyl mugars were also determined.
The results indicate a branched structure for a native and non-denatured specimen of konjac glucomannan.
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