Effects of pH and temperature on the activity and stability of the recombinant Tth xynB3 β-xylosidase. a) Effect of pH on Tth xynB3 β-xylosidase activity. b) Effect of temperature on Tth xynB3 β-xylosidase activity. c) The thermostability of the Tth xynB3 β-xylosidase. The residual activity was monitored while the enzyme was incubated at 75°C (filled left triangles), 80°C (filled down triangles), 85°C (filled up triangles), 90°C (filled circles) and 95°C (filled squares). The maximum activity was defined as 100% (a, b) or initial activity was defined as 100% (c).