How will you test the presence of protein in food sample?
Answers
Explanation:
Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.
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Answer:15 x 125mm test tubes. One per test sample.
Test tube clamps.
Test tube rack.
Mortar and Pestle.
Droppers.
Small beakers or glass jars.
Glass marking pen (Sharpie or China marker).
Hot water.
Nutrient solutions to be tested (made from foods you wish to test for sugar, protein, fat, and vitamin C content).
Explanation:Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.
What to do.
To a test tube, add 40 drops of liquid to be tested.
If testing more than one liquid, label each test tube with a marker.
Add 3 drops of Biuret reagent solution to each test tube. Shake gently to mix.
Note any color change. Proteins will turn solution pink or purple