testing for proteins the burett TEST

 AIm to test if a  food contains proteins


EQUIPMENT  test tube sodium hydroxide Naho copper sulphate food sample

METHOD

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

2  add 5 drops of copper sulphate.

3  shake the test tube gently from side to side

RESULTS

if the solution remains blue then no proteins are present .if the solution change to a purple colour then protein is present in the sample