Food Tests

Question 1

Test for lipids

Answer 1

Emulsion test
-mix with ethanol and pour into distilled water
-if lipids present CLOUDY WHITE

Question 2

Test for sugars

Answer 2

Benedict’s test
-Crush food, filter and add Benedict’s
-heat
-if sugar present BRICK RED

Question 3

Test for protein

Answer 3

Biuret test
-crush food, filter, add biuret solution
-if protein present LILAC

Question 4

Test for starch

Answer 4

Iodine
-crush food, filter, add iodine
-if starch present BLUE/BLACK