(give the answer fast i will mark as brainlist answer) 100 g of a milk powder contains 27 g of fat, 38 g of carbohydrate and 26 g of protein. al Describe how you would test for the nutrients in milk powder and what results you would expect.
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Explanation: The totals of the nutrients do not add up to 100 g because 100 g is the total weight of the milk powder, not just the weight of the nutrients in the powder.The milk powder contains not only nutrients but also other components, such as moisture, minerals, and vitamins. Therefore, the total weight of all the components will be equal to the weight of the milk powder given which is 100 g.In this case, the milk powder contains 27 g of fat, 38 g of carbohydrate and 26 g of protein, which means that the remaining weight is made up of other components, such as moisture, minerals, and vitamins.
Answer:
To test for the nutrients in milk powder (fat, carbohydrate, and protein), you can perform the following tests:
1. Fat Test:
a. Emulsion Test: Dissolve a sample of milk powder in warm water.
b. Add a few drops of Sudan III solution (a fat-soluble dye).
c. If fat is present, it will form a separate red layer at the top of the solution.
2. Carbohydrate Test:
a. Benedict's Test: Mix a sample of milk powder with water and heat it.
b. Add Benedict's solution and continue heating.
c. If carbohydrates (sugars) are present, the solution will change color, typically to orange or red, indicating the presence of reducing sugars.
3. Protein Test:
a. Biuret Test: Create a solution of milk powder and water.
b. Add a few drops of dilute copper sulfate solution and sodium hydroxide.
c. If proteins are present, a violet or purple color will develop.
Expected Results:
- For fat: You would expect a separate red layer to form at the top of the solution.
- For carbohydrate: You would expect a color change in the Benedict's solution, indicating the presence of reducing sugars.
- For protein: You would expect a violet or purple color to develop during the Biuret test, confirming the presence of proteins in the milk powder.
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