1.   Optimal pH Range: pH 5.5-10.5
2.   Optimal Temperature: 40°C to 70°C
3.   Appearance: Light Yellow Granules
4.   Specification: 100,000U/g or 150,000U/g
5.   Packing: 25kg/bag


Xylan is a kind of polysaccharide, which widely exists in plant. It plays very important role of the cell wall and plant structure tissue. As one of the important part of hemicellulose, xylan always combined with cellulose, xylogen and the others in forms of compounds existing in plant. In paper industry, the interspac-es of pulp matrix are always blocked by xylan and xylogen, thus causes the lower quality of paper and pulp. Also they reduce bleaching efficiency, lowers paper whiteness , always causes bleach agent overuse and brings some environmental issues such as paper strength and bleaching waste water exceed standard.
Alkaline Xylanase is developed by for specially degrading xylan as industrial enzyme with molecular biology, microbial fermentation technology and other modern biological technology. It comes from single strain fermentation and extracts from Asia's leading advanced post-processing techniques, with both internal and external degraded activity (both EC and EC function), effectively degrades xylan in pulp, helps separate pulp cellulose from xylogen, xylan and other impurities. Thus it helps highly improving pulp quality and whiteness, reducing cost of pulp treatment and waste water treatment.


One unite (U) of xylanase is defined as the amount of enzyme which liberates 1μmol of reducing sugar from 5mg/ml Birchwood xylan solution at 50°C and pH 8.0 in one minute.


Treatment process: Recommend dealing with it after pulp cooking or oxidative delignification, or before adding bleach, as a pre-bleaching process.
Pulp condition: Before mixed with Alkaline Xylanase, the pulp temperature should be 45-55°C, pH 6.5-9.5, viscosity 6-10%.
Contact period of enzyme and pulp: 1 hour.
Dosage: 50g per tone pulp (OD. Basis)-Xylanase 100,000U/g..
35g per tone pulp (OD.Basis)-Xylanase 150,000U/g
Xylanase can be added to pulp after cooking or oxygen delignification and prior to bleaching for the improvement of pulp bleachability.
Almost every mill has unique conditions of fibre furnish, pulping technology and bleach sequence. The optimal dosage can also depend on the temperature, pH and consistency of the pulp.


Stored in a cool dry place and avoid direct sunlight. Avoid to be exposed to the sun, rain, high temperature and high humidity.


Middle temperature is non-toxic and biodegradable.
Avoid unnecessary contact and long-time exposure will make someone sensitive to this products.
Wash hands with warm soapy water after contact the product.
Keep them in the place that out of reach of children.