Cellulase unit

A Cellulase Unit is a unit of measurement for the enzyme Cellulase. One Cellulase Unit (CU) is that activity that will produce a relative fluidity change of one in 5 minutes in a defined carboxymethylcellulose substrate under the conditions of an assay (50 deg Celsius, pH 4.5). Cellulases enzymatically split cellulose into a variety of hexoses, this is called hydrolysis.