Xylanase or hemicellulase are a diverse class of enzymes that hydrolyze hemicelluloses or xylan compound, a group of polysaccharides comprising xylan, xylobiose, and arabinogalactan. The xylanase act on these complex nonstarch polysaccharides, which are composed of β-glycosidic linkages and contain five or six-carbon sugars, but not cellulose.
Xylanase is an important enzyme that is used to degrade one of the essential components of a plant’s cell wall. This component is known as hemicellulose. Xylanase breaks down the linear polysaccharide xylan into xylose.