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Studies on seed mucilages. IV. The seed mucilage of Plantago lanceolata



Studies on seed mucilages. IV. The seed mucilage of Plantago lanceolata



Jour Chem Soc [london] (6): 1608-1612



Methylated rib grass-seed mucilage prepared from the acetate(Jour. Chem. Soc. [London] 1940. 1501.) gave on methanolysis trimethyl methyl-D-xylopyranosides (37%), tetramethyl methylgalacto-pyranosides (2.4%), 2,4-dimethyl methyl-D-xylosides (16%), 2,3-dimethyl methyl-D-xylosides (16%), 2,4,6-trimethyl methyl-D-galactosides (1.2%), 2-methyl methyl-D-xylosides (8%), 3-methyl methyl-D-xylosides (ca. 5%), and methyl-D-xylosides (7%). The presence of 3,4-dimethylxylose derivatives previously claimed (loc. cit.) could not be substantiated. The aldobiuronic acid present in the portion of the mucilage resistant to hydrolysis appeared to be a mixture; the acidic component was identified as D-galacturonic acid.

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Accession: 025567408

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