Azo-Xylan (Birchwood) (S-AXBL / S-AXBP)

What chromogenic substrate do you recommend to use in petri dish plates for detection of xylanase activity, and what is the principle of the method?
We have three soluble substrates for the measurement of xylanase activity. However we recommend using the Azo-Xylan (Birchwood) (S-AXBP or S-AXBL).  All o...
Fri, 25 Mar, 2016 at 10:47 AM
Results obtained with Azo-Xylan (Birchwood) (S-AXBL / S-AXBP) seem unstable, and have dropped from 10,000 units to 850 units after 3 weeks?
The normal variability with this product is +/- 5-7%.  Check your blank value which should be less than 0.1.  If this value increases with time, the subs...
Fri, 25 Mar, 2016 at 10:49 AM
I require 4-0-Methyl-D-Glucurono-D-Xylan-Remazol Brilliant Blue R with a dye content of ~13%. Is Azo-Xylan (Birchwood) (S-AXBL / S-AXBP) suitable?
The material you need is Azo-Xylan (Birchwood). Birchwood xylan is, in fact, a 4-0-methyl-D-glucuronoxylan, with the glucuronic acid occurring as si...
Fri, 25 Mar, 2016 at 10:51 AM
I use Azo-Xylan (Birchwood) (S-AXBP or S-AXBL) in my xylanase assays. Is it pure of does it contain any trace amounts of beta-1,4 linked glucan/cellulose?
The xylan contains no beta-glucan.  Many pure endo-cellulases can also hydrolyse xylan. Product Page (S-AXBP) Product Page (S-AXBL)
Fri, 25 Mar, 2016 at 10:53 AM
How to create a standard curve for a different enzyme than stated in the data booklet whenusing Azo-Xylan (Birchwood) (S-AXBP / S-AXBL)?
To prepare a standard curve for the particular enzyme first you need to check the activity of your enzyme sample at the optimum conditions (pH, temp.) usi...
Fri, 22 Apr, 2016 at 1:01 PM