K-CellG5-4V
SKU: 700004272
Content: | (K-CellG5-4V) 120 / 240 assays (manual) / 480 assays (auto-analyser) or (K-CellG5-2V) 60 / 120 assays (manual) / 240 assays (auto-analyser) |
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: | 1.2 x 10-3 U/mL |
Reproducibility (%): | ~ 3% |
Total Assay Time: | 10 min |
Application examples: | Fermentation broths, industrial enzyme preparations and biofuels research. |
Method recognition: | Novel method |
The K-CellG5-2V pack size has been discontinued (read more).
Cellulase Activity Assay Kit.
The CellG5 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-cellopentaoside (BPNPG5) and 2) thermostable β-glucosidase. The ketone blocking group prevents any hydrolytic action by the β-glucosidase on BPNPG5. 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 4-nitrophenol is therefore directly related to the hydrolysis of BPNPG5 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).
The CellG5 assay represents a huge step forward in the methodology for the measurement of cellulase that traditionally relied on substrates such as CM-cellulose, Avicel, cellooligosaccharides, filter paper or dyed polysaccharides including CMC Congo red or cellulose azure.
View Cellulase Activity Assay Protocol.
View our complete list of assay kits for enzyme activities.