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Chemical reactions in cheesecake

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Battle of Gettysburg

on 6 March 2014

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Transcript of Chemical reactions in cheesecake

Chemical reactions with cheesecake
The History of Cheesecake
Browning in the graham cracker crust
Coagulation and Denaturing
Eggs and Sugar
Caramelization
Caramelization in Cheesecake
Denaturing: the process in which proteins change in structure due to some external stress such as heat
Coagulation: the process in which denatured proteins are altered by forming bonds between one another
1. The eggs proteins denature
2. The sugar wraps around the proteins
3. The eggs coagulate
Decomposition of Sucrose
Decomposition of Fructose and Glucose into Aroma Molecules
Oligomerization of Fructose and Glucose
caramelan: C12H12O9
caramelen: C36H18O24
caramelin: C24H26O13
decomposition of sucrose-sugar melted to liquid
smell
browned and became sticky
• originated in Ancient Greece and Rome- they called it "libum"
• first written recipe is traced back to Marcus Porcius Cato
• a sweeter version was created in 230 A.D.
• the New York style cheesecake was created in 1929 by Arnold Reuben
Non-enzymatic browning reactions: is a chemical process that produces a brown color in foods without the activity of enzymes

Two major types of non-enzymatic browning
Caramelization
Maillard Browning: Chemical reaction between amino acids and reducing sugar
3 steps for browning

Before
After
After
Before
Recipe
crust
:
9 graham crackers
4 tbsp of melted butter
¼ cup of sugar
1. Roll crackers out with a rolling pin until smooth (crushed), then add sugar and butter and bake at 350 for 15 minutes.
filling
:
3 packages of Philadelphia cream cheese
1 cup of sugar
5 large whole eggs
2 tbsp of vanilla
2 tbsp of lemon juice
1. Beat the cream cheese, sugar, eggs, vanilla, and lemon juice until smooth.
2. Pour the mixture on top of the hot crust, then put back in the oven.
3. Bake at 350 for 20-25 minute.
top layer:

1½ pints of sour cream
¾ cups of sugar
2 tbsp of vanilla
1. Beat all together until smooth and then pour on top of cheesecake.
2. Place back into oven at 350 for 8-10 minutes.
Final Product
Full transcript