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Wednesday 26 February 2020

Nutrient food testing.

 Our aim is to find out what nutrients are present in different foods.

Test foods - Hypothesis:

  • Egg - I think a Egg will have proteins in it.
  • Milk -  I Think Milk is a complex sugar and has protein.
  • Apple - I think a Apple will have complex sugars in it.
  • Bread - I think Bread will be a complex sugar.
  • Potato - I think potatoes are a complex sugar and have protein.
  • Sugar - I think Sugar is a simple sugar.  
Method for complex sugar:
  1. We put the food in the test tubes.
  2. Then we put two drops of glucose in each food.
  3. Then we waited to see what colour it would turn to determine if it is a simple or complex sugar.
Method for simple sugar:
  1. We put the food in the tubes.
  2. Then we added 5 drops of Benedict.
  3. waited for them to change colours.
Results for simple sugar -  

  • Glucose - Glucose is a simple sugar.
  • Apple - Apples have simple sugars.
  • Potato - The Potato has a little bit of simple sugars.
  • Eggs - Eggs are not a simple sugar.
  • Bread - Bread is not a simple sugar.
  • Milk -  Milk is not a simple sugar.

Results for Complex sugar - 
  • Eggs - Eggs are  a complex sugar .
  • Bread - Bread is a complex sugar.
  • Milk - Milk is  a complex sugar.
  • Potato - Potatoes are a complex sugar.
  • Apple - Apples are a complex sugar.
  • Glucose - Glucose is not a complex sugar.
Protein method:
  1. Place the food in the test tubes.
  2. Place 2 ML of the sample into a test tube and add 5 drops of sodium hydroxide.
  3. Add 5 drips of copper sulfate.
  4. shake the test tube gently side to side.
Findings - 
  • Apple - Has no protein in it,  it stayed blue.
  • Potato - Has no protein in it,  it stayed blue.
  • Glucose - Has no protein in it,  it stayed blue.
  • Bread - Has no protein in it,  it stayed blue.
  • Egg - Has protein in it.
  • Milk - Has protein in it. 
Conclusion - 
My hypothesis was close, I was correct about Egg and Milk having protein and Complex sugars in them, I was right saying that Glucose and Apples are simple sugars and that Bread and Potato's are complex sugars.
Discussion - 
I learnt that Potatos and Bread dont have protein.





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