Question

Describe how protein is tested in food.
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Answer 1

Answer:

Test if a food item contains protein.

Take a small quantity of the food items to be tested.

Grind/mash/paste/powder the food item.

Put the food item into a test tube.

Add 10 drops of water and shake the test tube.

Using a dropper add two drops of copper sulphate solution to the test tube.

Answer 2

Answer:

The presence of protein is tested by the Biuret test for proteins. The Biurette reagent made of sodium hydroxide and copper (II) sulphate helps in determining the presence of protein in a sample.