Investigations on the structure of a hemicellulose fraction isolated from the trunk of a young bael ( Aegle marmelos) tree

Purified hemicellulose isolated from a young bael ( Aegle marmelos) tree with 2.5 m sodium hydroxide contained d-xylose and 4- O-methyl- d-glucoronic acid in the molar ratio of 7.43:1; traces of glucose, galactose, rhamnose, and arabinose were also present. The linkages between the monosaccharide un...

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Bibliographic Details
Published in:Carbohydrate research 1982-01, Vol.104 (2), p.309-317
Main Authors: Basak, Ratan K., Mandal, Prabir K., Mukherjee, Amal K.
Format: Article
Language:English
Subjects:
nonfood plant products
plant biochemistry
plant physiology
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Summary:Purified hemicellulose isolated from a young bael ( Aegle marmelos) tree with 2.5 m sodium hydroxide contained d-xylose and 4- O-methyl- d-glucoronic acid in the molar ratio of 7.43:1; traces of glucose, galactose, rhamnose, and arabinose were also present. The linkages between the monosaccharide units were determined by methylation analysis of a hemicellulose fraction (II A) and carboxyl-reduced, hemicellulose II A, and the results were corroborated by those from periodate oxidation and Smith degradation. The anomeric configurations of the d-xylopyranosyl residues were determined by chromium(VI) trioxide oxidation of the acetylated, carboxyl-reduced hemicellulose, and the aldobiouronic acid obtained from graded hydrolysis was characterized. These experiments clearly revealed the structure of this hemicellulose.
ISSN:0008-6215
1873-426X
DOI:10.1016/S0008-6215(00)82591-4