Xylan (Beechwood; purified)

Highly purified xylan from beechwood is currently unavailable. We forecast that it will be available at the start of September 2017. 

In the meantime, the following alternative products are available:

Arabinoxylan RS (Wheat Flour), P-WAXYRS – an excellent substrate for measurement of endo-1,4-β-xylanase activity using reducing sugar assays (DNSA and Nelson-Somogyi). Arabinoxylan RS is an alternative to Xylan (Beechwood).

Arabinoxylan (Wheat Flour; Medium Viscosity), P-WAXYM – recommended for viscometric assays of endo-1,4-β-xylanase.

Xylazyme AX tablets, T-XAX – recommended for the measurement of endo-1,4-β-xylanase activity in food and feed products.

endo-Xylanase Assay Kit (XylX6 Method), K-XylX6 – a novel, colourimetric method for the determination of endo-1,4-β-xylanase in any sample type including crude enzyme extracts, fermentation broths or commercial enzyme preparations.

In the Publication tab, please find a scientific publication which compares the polysaccharide substrates and reducing sugar methods for the measurement of endo-1,4-β-xylanase.

DESCRIPTION

Xylan (Beechwood; purified)
CAS: 9041-63-5 

Synonyms:
4-O-methyl glucuronoxylan

Stability:
> 5 years at room temperature 

Properties:
Sugar Composition: Xylose 81.3%, glucuronic acid 13.0%,
other sugars 5.7%
Protein: 0.2%
Ash: 3.2%
Moisture:1.7%
Physical Description: Off-white, odourless powder

Applications:
Highly purified xylan from beechwood suitable as a replacement for birchwood xylan as a substrate for β-xylanase in DNSA reducing sugar assays.

Novel substrates for the automated and manual assay of endo-1,4-β-xylanase.

Mangan, D., Cornaggia, C., Liadova, A., McCormack, N., Ivory, R., McKie, V. A., Ormerod, A. & McCleary, D. V. (2017). Carbohydrate Research, 445, 14-22.

A Comparison of Polysaccharide Substrates and Reducing Sugar Methods for the Measurement of endo-1,4-β-Xylanase.

McCleary, B. V. & McGeough, P. (2015). Appl. Biochem. Biotechnol., 177(5), 1152-1163.

Purification and Characterization of a Thermostable β-mannanase from Bacillus subtilis BE-91: Potential Application in Inflammatory Diseases.

Cheng, L., Duan, S., Feng, X., Zheng, K., Yang, Q. & Liu, Z. (2016). BioMed Research International, ID 6380147.