On wednesday at the afternoon we did an experiment to test different foods. We had two test tubes. The test tube 1 had egg white and the test tube 2 cooking oil and the Reagent was biuret.

the results were like this

test tube 1 ( egg white) The colour changed from pale blue to purpule

test tube 2 (cooking oil) There was a cloudy and milky layer at the top

Conclusion: there was a presence of protein

photos (test tube 1)

(Test tube 2)