Figure 5From: A fast, sensitive and easy colorimetric assay for chitinase and cellulase activity detectionApplication of ChitO-based assay for the detection of the hydrolytic products of a cellulase from Aspergillus niger using filter paper as a substrate. The mutant ChitO-Q268R was used instead of the wild-type ChitO. The average absorbance values at 515 nm of the triplicates were subtracted from the averaged blank value and plotted. ChitO, chito-oligosaccharide oxidase.Back to article page