Abstract
Xylan is the main hemicellulose in hardwood from angiosperms (15-30% of total dry weight), and consists of a linear polymer composed of xylose units joined together by glycosidic linkages of the type beta-1,4. However, in nature, it is usually associated with other sugars forming glucuronoxylans, glucuroarabinoxylans, glucomannans, arabinogalactans and galactoglucomannans. Xylanases, enzy…