How to Test for Protein in Food

If you have a child who is interested in science (or even if she's not), determining if certain food products contain protein is a fun and educational project for the whole family. Actually, you can really make a game of it, by taking bets (not to promote gambling) on whether something in particular is made with protein. Once you have a bottle of something called Biuret Reagent Solution, your test can begin.

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Biuret Reagent Solution Test tube Fork or spoon Bowl Eye dropper Distilled water Various food products

Instructions

- 1
  
  Select the food you'd like to test and remove just a small portion of it.
- 2
  
  Place it in a bowl with about a tablespoon of distilled water and crush with a fork (or spoon). You're trying to make an almost liquefied version of the food.
- 3
  
  Transfer the liquid into a test tube by using a eye dropper.
- 4
  
  Squeeze 3 to 4 drops of Biuret Reagent Solution, cover tube and shake.
- 5
  
  Wait for the color to change. If it turns either pink or purple, the food contains protein.

Tips & Warnings

It may also be fun to test the protein content in a variety of different juices. If you were to do so, you should still dilute the juice with some distilled water.

Suggest item

Biuret Reagent Solution

Comments

Anoushka Aug 11, 2011
gud test I like science.

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How to Test for Protein in Food

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