Proteins Test
Problem : Are proteins present?Hypothesis : If the substance is mixed with biuret reagent changes to a blue, violet or purple color then proteins are present.
1. Obtain 5 test tubes and label them: Albumin, Starch, Glucose, Oil and Water. 2. Add 10 mL of each solution in their labeled test tube. 3. Add 5 drops ofBiuret Reagent to each test tube. Gently swirl the contents to mix the solutions. 4. If the solution changes to a blue, purple or violet color then it contains Proteins. Observe and record your results. Results: As you can see the tet tube on the right that contained Albumin clearly is present for proteins |