Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

The Effect of Bromelain on Gelatin

No description
by

Victoria Espinoza

on 16 April 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of The Effect of Bromelain on Gelatin

The Effect of Bromelain on Gelatin
Prediction
Because of the collagen in gelatin
and the bromelain in pineapples, I think that the bowl containing room temperature pineapple will not set at all because the enzyme will be functioning properly.
Variables
Independent
: temperature of pineapple

Dependent
: Gelatin being affected by pineapple of different temperatures

Controlled
: amount of water in gelatin mixture, container holding gelatin (glass bowls), time in refrigerator
Prediction cont.
But, I do believe that the bowls containing heated and frozen pineapple will set because the extreme temperatures will likely denature the enzymes, allowing the gelatin to set properly.
DATA
DATA
Background
Conclusion
Procedure
Gelatin gets its structure from
a protein called collagen.
Pineapples contain bromelain,
which is an enzyme that digests
proteins. Bromelain becomes
denatured at around 158
degrees Fahrenheit.

Make four different batches of
gelatin. Each will contain four
cups of water. In the first bowl,
add nothing. In the second, add
ten pieces of pineapple at room
temperature. In the third
bowl, add ten pieces of
pineapple that have been heated in
the microwave for two minutes.
For the fourth, add ten pieces of
frozen pineapple. Put all four bowls
in the refrigerator for six hours and
then measure how much liquid is left
after the six hour period is up.
In conclusion, the gelatin will not set if room temperature pineapple and frozen pineapple are added to it. The bowl without pineapple and the bowl with heated pineapple did set. The heated pineapple did not keep the gelatin from setting because the heat from the microwave denatured the bromelain. I originally thought that the frozen pineapple would be denatured as well because of the temperature, but bromelain is only denatured at a temperature of 158 degrees Fahrenheit. So even though the pineapple is frozen, the enzyme still works. Does the enzyme still work in canned pineapples?
Full transcript