Table 1 Activity assays of the industrial cellulase enzymes

Total protein content (mg/mL or mg/g)

87.3

75.8

46.7

Filter paper unit (FPU/mL or FPU/g)

203.2

199.4

63.0

β-glucosidase unit (CBU/mL or CBU/g)

4900

5500

99.9

FPU and CBU ratio (FPU/CBU)

1:24.1

1:27.6

1:1.6

Specific filter paper unit (FPU/mg protein)

2.33

2.62

1.35