Benedict test (Carbohydrate test)
I’m studying and need help with a Biology question to help me learn.
Instructions: – Go to https://gizmos.explorelearning.com/index.cfm?metho… . I have attached credentials
1. Record your detailed results as you proceed. Good Scientists often repeat their experiments so you may find it useful to do so too. (Ive attached how to record results.)
2. In the Macronutrients Lab in the gizmo Testt EACH sample with EVER NUMBER OF TESTT PROVIDED (4 tests for each sample)
Benedict test (Carbohydrate test):
1) The food sample was added to a clean test tube.
2) Then, the benedict is incorporated with the food sample.
3) As the substance has completely dissolved, it was placed above the bunsen burner for 5 minutes.
If the substance changed colour from blue to green, green to brown, brown to orange; then the food sample contained carbohydrates.
Lugol Test (Carbohydrate test):
1) A food sample was taken and was placed upon the test tube holder.
2) The food sample was added to a clean test tube.
3) Then, the lugol was incorporated with the food sample.
If the substance changed colour from blue to purple; then the food sample had starches present.
Biuret Test (Protein test):
1. A food sample was taken and was placed upon the test tube holder.
2. The food sample was added to a clean test tube.
3. Then, the biuret was incorporated with the food sample.
If the substance changes colour from blue to purple; then the food sample has proteins present.
Sudan Red Test (Lipids test):
1. A food sample was taken and placed in the test tube holder.
2. The food sample was added to a clean test tube.
3. Then, the sudan red was incorporated with the food sample.
If the substance shows the presence of spots; than the food sample contained lipids (AKA fats).
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