Sunday, February 19, 2012

Extracting gluten lab

LAB 
 you will need:
Flour,warm water, cheese cloth,and a bowl. 
Extract the gluten in flour. by squeezing on the cloth in the bowl of warm water. After the bumps are gone from the goo, you can stop   squeezing at the cloth and take the watery flour out if the cheese cloth(CARFUL it is sticky!) If you can't get it all off,put the open cheese cloth and get the the goo off as best as you can! After 5 to 10 minutes you have washed away all the starch from flour!




1.  Place 1 cup of flour in the middle of cheese cloth.
2. Place the cheese cloth and flour in a bowl of warm water.
3.Squeeze the flour until all the bumps are gone.
4. This is what it looks like. Everything put the gluten is left.
5. Form into a ball. This is very sticky because gluten is the glue that holds food together.

6. This is what it should look when it is done!
The way this works is that gluten is a molecule that has a protein thats made up of amino acids. So, with the energy from squeezing it makes the proteins stick together to form a sticky, messy, thing. When making bread, you use yeast.It provides bubbles of carbon dioxide (air),the carbon dioxide makes the bread rise. Without gluten, the air will escape and you will have flat, hard bread. 

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