22°C

Prof Wilson: Let’s find out based on your results. Are you sure that is the optimal temperature? What is happening with the colour change at this temperature?  

You: Oh.. at 22°C the dark blue colour has remained throughout the experiment. So, this cannot be the optimal temperature. 

Prof Wilson: That is correct, let’s consider what is happening at the other temperatures then.

                   Results: Optimal temperature for amylase activity

What is the optimal temperature for amylase?