The effects of pH and temperature on the activity and stability of the recombinant BGL. a Effect of pH on BGL activity. b Effect of temperature on BGL activity. c The pH stability of the enzyme. d The thermostability of the BGL. The residual activity was monitored, while the enzyme was incubated at 50°C (filled diamonds), 65°C (filled squares), 68°C (filled triangles), and 70°C (letter x). The initial activity was defined as 100%.