Testing for protien

Foods Testing experience:

Aim: 
What nutrients are present in different foods.

Hypothesis:
Testing simple sugars {carbohydrates that gives us energy fast}
Testing for complex sugars {carbohydrates to gives us energy slower}
Protein--~---
Bread, eggs, glucose, apple, milk, potato
I think bread is a complex sugar
I think eggs will be a protein 
I think glucose will be a simple sugar
I think Apple will be a complex sugar
I think milk will be a complex sugar
I think potatoes will be a complex sugar

(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-