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Plant mucilages 32. a representative mucilage althaea mucilage r from the roots of althaea rosea



Plant mucilages 32. a representative mucilage althaea mucilage r from the roots of althaea rosea



Chemical and Pharmaceutical Bulletin 31(8): 2677-2684



A representative mucilage, named Althaea-mucilage R, was isolated from the roots of A. rosea (hollyhock). The final preparation was homogeneous as determined by ultracentrifugal analysis, cellulose acetate and glass-fiber electrophoresis, and gel chromatography. Its water solution gave an intrinsic viscosity value of 33.4. It was composed of partially acetylated acidic polysaccharide and protein in a ratio of approximately 10.3:1.0, and its MW was estimated to be 41700. The polysaccharide moiety was composed of D-galactose, D-glucose, L-rhamnose, D-galacturonic acid and D-glucuronic acid in the molar ratio of 2:1:6:4:6. Reduction of carboxyl groups followed by methylation analysis, and partial acid hydrolysis studies made it possible to deduce the structural features of the polysaccharide moiety in the mucilage.

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Accession: 006126249

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