Final answer:
To check for simple sugars, use Benedict's solution and heat, a color change indicates their presence. For protein detection, use Biuret reagent and observe a color change to purple or lavender. Record and compare results for accurate interpretation.
Step-by-step explanation:
To determine if a nutritional drink contains simple sugars and protein, specific tests are used for their detection. Simple sugars can be tested using the Benedict's solution, where a positive test will result in a color change from blue to green, yellow, or brick-red upon heating, indicating the presence of reducing sugars such as glucose or fructose. For proteins, the Biuret test is performed. A positive result is indicated by a color change from light blue to lavender or purple when Biuret reagent is added and the substance contains proteins or peptides.
Here's a general procedure that might be followed:
- Put a small sample of the drink into a test tube and add just enough water to cover the sample.
- For sugar detection, add Benedict's solution to the test tube with the sample and heat it. Look for a color change as an indication of simple sugars.
- For protein detection, add Biuret reagent to a separate sample of the drink in another test tube. Observe any color change to indicate the presence of proteins.
- Record the results and compare them with known standards for accurate interpretation.
In a classroom or lab setting, always follow safety guidelines and teacher or supervisor instructions when performing these tests.