Protein And Lipid Test

Question 1

Describe the method of protein test.

Answer 1

1. Put test solution (albumen) in test tube
2. Add dilute solution of sodium hydroxide
3. Add copper sulphate solution down side of test tube
4. Record colour change

Question 2

What is positive colour change of protein?

Answer 2

Blue to purple

Question 3

Describe the method for a lipid test?

Answer 3

1. Mix fat/oil with ethanol in boiling tube
2. Gently shake tube
3. Pour mixture into another boiling tube full of cold water
4. Record results

Question 4

What is the positive result for lipids?

Answer 4

Milky emulsion