CONSTITUTION OF AN ALDOTETRAOURONIC ACID FORMED ON ENZYMIC HYDROLYSIS OF A 4-O-METHYLGLUCURONOXYLAN FROM THE WOOD OF WHITE BIRCH (BETULA PAPYRIFERA MARSH.)

Abstract

An aldotetraouronic acid has been isolated by enzymic hydrolysis of a 4-O-methylglucuronoxylan from the wood of white birch. It has been shown to be O-4-O-methyl-α-D-glucosyluronic acid-(1 → 2)-O-β-D-xylopyranosyl-(1 → 4)-O-β-D-xylosyl-(1 → 4)D-xylose.