The structure of the xylan of the wood of Platanus orientalis
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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