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The Jello and Pineapple Story
by Laura Martin
It was Christmas
• Grocery stores were closed.
• I had hungry guests arriving.
• I started cooking lots of food.
• I started making my mandarin orange, walnut,
dried cranberry, raspberry jello mold.
• I realized I forgot to buy the mandarin oranges.
• Oh No!
Lucky for me, I had fresh pineapple on
hand…
Or was I not so lucky?
• I mixed up the mold, added chopped fresh
pineapple and put my mix in the refrigerator
to set.
• 2 hours later I checked on my mold……..
It was still liquid!!!
My mold looked like mixed fruit soup.
WHAT HAPPENED???
Well,
After looking at the expiration date on the box of
jello I used (it was OK) and running to Google, I
found:
Pineapple contains a protein degrading enzyme
called bromelain.
Jello contains gelatine which is a protein.
BINGO!
I must have missed this lesson in Chemistry Lab. 
Here is a video showing what happens:
• http://www.youtube.com/watch?v=I1sdN_v2
Wbw
• Now, Betty has found a way to remedy this!
• http://www.youtube.com/watch?v=1nfes2DEl
68
• No FRESH Pineapple
• YAY, Betty!
Why does canned pineapple work?
Because heat kills the bromelain enzyme, and
canned pineapple is heated as part of the canning
process.
You can read more about the chemistry here:
http://chemistry.about.com/od/foodcookingchemis
try/f/pineapple-jello.htm
As for me, live and learn always.
No jello mold this year for Christmas.


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The jello pineapple story copy

  • 1. The Jello and Pineapple Story by Laura Martin
  • 2. It was Christmas • Grocery stores were closed. • I had hungry guests arriving. • I started cooking lots of food. • I started making my mandarin orange, walnut, dried cranberry, raspberry jello mold. • I realized I forgot to buy the mandarin oranges. • Oh No!
  • 3. Lucky for me, I had fresh pineapple on hand… Or was I not so lucky?
  • 4. • I mixed up the mold, added chopped fresh pineapple and put my mix in the refrigerator to set. • 2 hours later I checked on my mold……..
  • 5. It was still liquid!!! My mold looked like mixed fruit soup. WHAT HAPPENED???
  • 6. Well, After looking at the expiration date on the box of jello I used (it was OK) and running to Google, I found: Pineapple contains a protein degrading enzyme called bromelain. Jello contains gelatine which is a protein. BINGO! I must have missed this lesson in Chemistry Lab. 
  • 7. Here is a video showing what happens: • http://www.youtube.com/watch?v=I1sdN_v2 Wbw • Now, Betty has found a way to remedy this! • http://www.youtube.com/watch?v=1nfes2DEl 68 • No FRESH Pineapple • YAY, Betty!
  • 8. Why does canned pineapple work? Because heat kills the bromelain enzyme, and canned pineapple is heated as part of the canning process. You can read more about the chemistry here: http://chemistry.about.com/od/foodcookingchemis try/f/pineapple-jello.htm As for me, live and learn always. No jello mold this year for Christmas. 