Abstract
MANY workers have identified the hexuronic acid components of pectins, gums and mucilages1. However, the uronic acid components of wood hemicelluloses have proved difficult to identify. O'Dwyer2 and Yaramori and Tachi3 have shown that glucuronic acid is present in the hemicelluloses of beech wood and of elm wood respectively. O'Dwyer4,5 has obtained, from oak wood, an aldobiuronic acid containing one methoxyl group per uronic acid residue. Also, Sands and Gary6 have obtained an aldobiuronic acid from mesquite wood hemicellulose: they demonstrated that the aldobiuronic acid contained a methoxyl group and, because of the difficulty encountered in the identification of the uronic acid (viewed in the light of the experience of Anderson and Otis7), suggested that the methoxyl group was attached directly to the uronic acid residue.
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STEWART, C., FOSTER, D. Identification of 4-Methyl-D-glucuronic Acid in Eucalyptus regnans Wood. Nature 171, 792 (1953). https://doi.org/10.1038/171792a0
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DOI: https://doi.org/10.1038/171792a0
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