Fig. 3.

Comparison of β-glucosidase activity in different LABs. The proteins were diluted to the concentration of ∼0.5 mg/mL to assay enzyme activity and the release of p-nitrophenol was measured at 405 nm. One-tailed Student t test for unpaired samples was used to assess significance of the differences between the three LABs. One unit of β-glucosidase is the amount of enzyme that catalyzes the hydrolysis of 1.0 μmole substrate per min at pH 7.0.