The linkages in insoluble and soluble laminarin have been analysed by the method of partial hydrolysis. It is confirmed that the principal linkage is of the 1:3-type, between β-D-glucopyranose residues. The presence of other (minor) structural features in both forms of the polysaccharide is indicated. Some properties of the new sugars, laminari-triose, -tetraose, and -pentaose are reported.
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