Benedicts Test - Testing for Simple Sugars
Aim: To test a sample of food to determine whether or not it contains simple sugars.
Method:
- Add 2mL Benedicts Solution to a sample of food. Heat over a Bunsen burner.
Results:
Conclusion:
When I added the blue Benedicts solution and then heated it, the solution went green then orange then a red/orange colour.
Iodine Test - Testing for Complex Sugars
Aim: To test a sample of food to determine whether or not it contains complex sugars.
Method:
- Add a sample of the food to be test into a test tube.
2.Add 3-5 drops of iodine and mix
Results:
Conclusion:
When we added the brown iodine, the sample turned black.
Biuret Test - Testing for Protein
Aim: To test a sample of food to determine whether or not it contains protein.
Method:
- Add a sample of the food to be test into a test tube.
- Add NaoH and then CuSO4
Results:
Conclusion
A positive test for protein is when the blue solution turned purple
Translucent Paper Test - Testing for Fats (Lipids)
Aim: To test a sample of food to determine whether or not it contains fats.
Method:
- Add a sample of the food on to absorbent paper
Results:
Conclusion:
The fat absorbed into the paper and made it translucent.