One unit (U) of endoglucanase, filter paper, and cellobiase activity is defined as the amount of the enzyme that released 1 mol of glucose perminute fromthe original substrate, at the experimental conditions described above. For b-glucosidase activity, one unit (U) is defined as the amount of the enzyme that releases 1 mol of p-Nitrophenol per minute from the p-Nitrophenyl b-D-glucopyrano-side, at the experimental conditions.