Xylan (Beechwood; purified)

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

In the meantime, the following alternative products are available:

Arabinoxylan (Wheat Flour; Low Viscosity), P-WAXYL – an excellent substrate for measurement of endo-1,4-β-xylanase activity using Nelson-Somogyi reducing sugar procedure.

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.

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.