Cellulase Assay Kit (CellG3 Method)

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The CellG3 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components;
1) 4,6-O-benzylidene-2-chloro-4-nitrophenyl-β-D-cellotrioside (BCNPG3) and 2) thermostable β-glucosidase. The benzylidene blocking group prevents any hydrolytic action by the β-glucosidase on BCNPG3. Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase. The rate of formation of 2-chloro-4-nitrophenol is therefore directly related to the hydrolysis of BCNPG3 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).

Detail

K-CellG3

180 / 360 assays per kit

Content:180 / 360 assays per kit
Shipping Temperature:Ambient
Storage Temperature:Short term stability: 2-8oC,
Long term stability: See individual component labels
Stability:> 2 years under recommended storage conditions
Analyte:endo-Cellulase
Assay Format:Spectrophotometer, Auto-analyser
Detection Method:Absorbance
Wavelength (nm):400
Signal Response:Increase
Limit of Detection:0.05 U/mL
Reproducibility (%):~ 3%
Total Assay Time:~ 20 min
Application examples:Fermentation broths, industrial enzyme preparations and biofuels research.
Method recognition:Novel method

This product has been discontinued (read more).

The CellG3 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 
1) 4,6-O-benzylidene-2-chloro-4-nitrophenyl-β-D-cellotrioside (BCNPG3) and 2) thermostable β-glucosidase. The benzylidene blocking group prevents any hydrolytic action by the β-glucosidase on BCNPG3.  Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase.  The rate of formation of 2-chloro-4-nitrophenol is therefore directly related to the hydrolysis of BCNPG3 by the endo-cellulase.  The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).

Please note that a new assay kit (K-CellG5) is now available for the measurement of endo-cellulase.  The CellG5 reagent contains a cellopentaose core and exhibits vastly improved sensitivity for some cellulases.  In addition, the exchange of the benzylidene blocking group in CellG3 for 3-keto-butylidene in CellG5 improves the substrate’s water solubility significantly, allowing for a reduction in the concentration of DMSO required in the assay.  As DMSO is known to inhibit certain cellulases, this is another benefit in using CellG5.  Megazyme now recommends the use of K-CellG5 for all assays for the measurement of endo-cellulase.

Browse more cellulase and other enzyme activity assay kits.

Scheme-K-CellG3 CellG3 Megazyme

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