Testing for protein
Aim: To test if a sample of food contains protein.
Equipment: Test tube, Sodium hydroxide, Copper solfate, food sample.
Method:
Place 2 ml of sample into a test tube and add 5 drops of Sodium hydroxide.
Add 5 drops of Copper solfate.
Shake the test tube gently from side to side.
Results: If solution remains blue then no protein is present. If solution changes to a purple colour then protein is present.
Conclusion: When My group did the egg yolk it didn't do anything because these's no protein in it. When we did the milk it also didn't do anything just stayed like that even though it's suppose to turn purple.
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