Exploring the Impact of pH on Enzyme Activity: A Practical Experiment

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festooned
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Exploring the Impact of pH on Enzyme Activity: A Practical Experiment

Post by festooned »

I’m currently working on a project related to enzyme activity and I need some insights on how pH levels might influence this. I’ve set up a basic experiment where I’m testing the activity of amylase in various pH conditions, but I’m having some trouble interpreting the results.

Experiment Details:
  • Enzyme Used: Amylase
  • Substrate: Starch solution
  • pH Levels Tested: 4, 5, 6, 7, 8
  • Method: I’ve used iodine staining to assess the amount of starch remaining after a set period.
Observations So Far:
  • At pH 6, the starch appears to be almost completely broken down.
  • At pH 4 and 8, there’s a noticeable amount of starch still present.
  • pH 5 and 7 show intermediate levels of starch breakdown.
I’m curious about a few things:
  • Why might amylase show optimal activity at pH 6?
  • What could be the reasons for the decreased activity at more acidic and more basic conditions?
  • Are there any specific enzymes that are known to have unusual pH profiles that I should be aware of?
Any insights or suggestions for further experiments would be greatly appreciated!

Thanks in advance for your help!
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ChenBeier
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Re: Exploring the Impact of pH on Enzyme Activity: A Practical Experiment

Post by ChenBeier »

Biological species need a certain pH to work properly. It looks like it is about pH 6 in this case. Too acidic or alcaline disturb the reaction.
You confirmed the result.

http://www.mystrica.com/Enzymes/alphaamylase
Violetica
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Re: Exploring the Impact of pH on Enzyme Activity: A Practical Experiment

Post by Violetica »

Hi I’m newer but it’s very interesting your project about pH and amylase . Could you please sent me the description of your project in order my education‘s thecnics can make too. Thanks 🙏
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