(Complex Test)
Equipment; Test tube, food sample, iodine solution.
Method;
1. Place about 2 ml of the sample in a test tube.
2. Add 3-5 drops of iodine and mix.
Result-
Observations
Potato- positive
Apple- Positive
Bread- Positive
egg- negative
milk-negative
glucose-negative
Discussion-
Conclusion- The bread and potato were correct but I was wrong with the apple.
(simple Test)
Equipment; Test tube, food sample, (naOH) (cuSO)
Method;
1. Place about 2 ml of the sample in a test tube.
2. Add 5 drops of and mix.
Testing for protein.
Aim: To test if a sample of food contains protein.
Hypo: Only the egg 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 five drops of copper sulfate
Step 3-Shake the test tube side to side
Results:
Apple-Negative
Potato-Negative
Bread-Negative
Milk-Positive
Egg-PositiveGlucose-Negative
Result-
+
Observations
Potato- negative
Apple- Positive
Bread- Positive
egg- negative
milk-negative
glucose-negative
Discussion-
Conclusion-