The structure of the xylan of the wood of Platanus orientalis
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It has been established that the xylan molecule is constructed of 16 repeating units, these consisting basically of an unbranched chain of 12 β-xylopyranose residues joined by 1 → 4 bonds.
To the main polyxyloside chain are attached single xylopyranose residues in the 1 → 3 position and 4-O-methylglucuronic acid residues in the 1 → 2 position. The presence of tri-O-methylxylose in a hydrolyzate of the fully methylated xylan shows the presence of small amounts of xylose in the branches of the xylan macromolecule.
KeywordsXylose Uronic Acid Glucuronic Acid Sodium Periodate Revealing Agent
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