Abstract
Following the preceding report on the structure of the viscous polysaccharide extracted from Natto, content ratio of methyl sugars was determined and the polysaccharide was found to have three branched chains. The structure of this polysaccharide was presumed from various data obtained in the present series of work such as periodate consumption of 24 moles, formic acid formation of 12 moles, detection of glyoxal and glyceraldehyde from the hydrolyzate of the polyaldehyde formed by periodate oxidation of the polysaccharide, and detection of glycerol, arabinose, xylose, and a minute amount of galactose from the hydrolyzate of polyhydric alcohol obtained by reduction of the foregoing polyaldehyde with sodium borohydride.
