In this experiment I am trying to find the best conditions for amylase to digest starch. I am going to vary the PH from PH6 to PH9 to see which one digests starch the fastest.

Time(mins)  Is Starch Present

       1                        Yes

       2                        Yes

       3                        Yes

       4                        Yes

       5                        Yes

       6                        Yes

       7                        Yes

       8                        Yes

       9                        Yes

      10                       Yes

      11                       No

The experiment was taking too long so we changed the time when we measured the solution to 2 minutes rather than 1.

Test:

We first tested PH6:

Time(mins)   Is Starch Present

         2                    Yes

         4                    Yes

         6                    Yes

         8                    Yes

        10                   Yes

        12                   Yes

        14                   Yes

        16                   Yes

        18                   Yes

        20                   Yes

        22                   Yes

        24                   Yes

        26                   Yes

        28                   Yes

        30                   Yes

        32                   No

PH6 took 32 minutes to digest the starch.

PH7:

Time(mins)   Is Starch Present

         2                    Yes

         4                    Yes

         6                    Yes

         8                    Yes

        10                   Yes

        12                   Yes

        14                   Yes

        16                   Yes

        18                   No

       

PH7 took 18 minutes to digest the starch.

PH8:

Time(mins)   Is Starch Present

         2                    Yes

         4                    Yes

         6                    Yes

         8                    No

       

       

PH8 took 8 minutes to digest the starch.

PH9:

Time(mins)   Is Starch Present

         2                    Yes

         4                    Yes

         6                    Yes

         8                    Yes

        10                   Yes

        12                   Yes

        14                   Yes

        16                   Yes

        18                   Yes

        20                   Yes

        22                    No

       

PH9 took 22 minutes to digest the starch.

Evaluation:

I think our results turned out well and produced a clear conclusion. The apparatus we used was not totally accurate but we still got decent results. I think our results could be improved by testing more PH’s and testing each PH more than once which didn’t get time to do.

 

The chart shows the pattern of time the enzymes took to digest the starch.

Conclusion:

In conclusion the best PH for amylase to digest starch is PH8 which was not what I predicted although the test may not have been entirely accurate.