For estimation of thermostability,
enzyme in acetate buffer (0.1 M, pH 6.0) was incubated at 70, 80 and 90 _C for different time intervals (10 min and 20 min).
After incubation, 500 ll of sodium phytate substrate solution (5 mM, prepared in 0.1 M Acetate Buffer pH 6.0)
was added in each test tube. Reaction was carried out at 37 _C for 30 min and the residual activity of the enzyme was calculated as per standard protocol.
Graph was plotted between incubation time vs % residual activity.