It is a Xylan hydrolyzing Xylanase enzyme with heat and pH stability derived from a selected strain of Aspergillus. Xylans are polysaccharides composed of β-1, 4- linked Xylopyranose units. They are one of the major constituents of plant cell walls and account for more than 30 % of the dry weight of terrestrial plants. The enzyme falls into the category of endo- β-1, 4-xylanase which is of prime importance for hydrolysis of Xylan polymers in Cereal Grains and Lignocellulosic Biomass. The enzyme breaks Xylan to short chain xylo-oligosaccharides of varying lengths.