Food Testing

Testing Food nutrients

Aim: Food nutrients are present in different foods.

Hypothesis: 

• I think eggs are protein. 
• I think bread will be complex sugar. 
• I think glucose will be simple sugar. 
• I think apple will be simple sugar. 
• I think milk will be protein. 
• I think Potato will be complex sugar.

Equipment: 

Testing Complex Sugar

Method Complex Sugar:
Add 5 drop of Iodine.

Result Complex Sugar

• Bread - Yes
• Egg -  No
• Potato - Yes
• Apple - Yes
• Milk - No
• Glucose - No

Testing Simple sugar

Method Simple Sugar:
1. Place about 2 ml of the sample into a test tube and then add 5 drops of Benedict's Solution.
2. Heat with a Bunsen until it changes colour. Do not boil.

Result Simple Sugar

• Potato - Some
• Eggs - No 
• Milk - No
• Glucose - Yes
• Bread - No
• Apple - Yes

Testing Protein

Method Protein:

1. Place about 2 ml of the sample into a test tube and add 5 drops of sodium hydroxide.

2. Add 5 drops of copper sulfate.

3. Shake the test tube gently from side to side

Result:

• Bread has no protein
• Milk has protein
• Glucose sugar has no proteins
• Egg is protein
• Potato has no protein
• Apple has no protein

Conclusion: My hypothesis were right. 


Discussion: I found out that egg and milk has no Complex sugar and Simple sugar.