Thursday, 27 February 2014

Something to digest

So we have heard all about enzymes but can we see them working?
First take 20ml of starch solution
 Measure out a specific amount of amylase
 Different groups used different amounts of amylase 
It must be measured out carefully
Then put a couple of drops of iodine in each dip of a spotting tray
Iodine goes black with starch
 Once everything is ready
 Add the amylase to the starch, mix and start the timer
 Keep mixing 
 And every minute add a drop of two of the mixture to a dip in the spotting tray
 Keep going until the iodine does not go black
 Then you know the amylase enzyme has turned all of the starch into glucose
This set of results shows that the amylase took between three and four minutes to digest the starch.
The class found that the more amylase you have the quicker digestion occurs.