Testing for protein
Aim: To test if a sample of food contains protein
Hypo: Only the milk will turn purple
Equipment: Test tube, Sodium hydroxide (haOH), Copper sulfate (coSO), Food sample.
Method;
Step 1- Place about 2 ml of the sample into a test tube and add 5 drops of sodium hydroxide.
Step 2- Add 5 drops of copper sulfate.
Step 3- Shake the test tube gently side to side.
Results:
Apple: Negative
Potato:Negative
Bread: Negative
Milk:Positive
Egg:Positive
Sugar:Negative
Conclusion:
The egg and the milk has protein in it but the
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