Provide the reagents used and the positive result to test the following nutrients:
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Provide the reagents used and the positive result to test the following nutrients:
|
Nutrients |
Name of test (if any) |
Reagents |
Expected Positive Results |
| Mineral Matter | |||
|
Calcium |
|||
| Carbohydrates | |||
|
Proteins |
|||
|
Fats |
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- What will be the difference in test values for the following tests if they are collected by fingerstick? Test Difference in Values Glucose Total Protein Calcium Potassiumhttps://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Molish test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test. (not a graded question, the video is very brief) (please take time to answer)Identify which one among the 6 carbohydrates; Glucose, fructose, maltose, lactose, sucrose or starch is present in the sample, if the sample gave the following test results. Positive results in Molisch, Benedicts and Seliwanoff's tests. Negative results in lodine, Bials and Mucic acid tests. An instant positive result in Barfoed's test.
- Complete the table below. Indicate what is observed if each test is positive. State what this result implies about each of the carbohydrates tested. TEST EXPECTED OBSERVATION FOR A POSITIVE TEST SUBSTANCE INDICATED BY A POSITIVE TEST I2 Solution Molisch Barfoed Seliwanoff Bial- OrcinolWhich of the following tests is used to distinguish glucose from fructose?* A. Molisch test B. Seliwanoff's test C. Bial's Orcinol D. Kowarsky test E. None of the given optionsWhich of the different carbohydrate tests would give a positive result for maltose? Describe the color change. Molisch test Fehling’s test Benedict’s test Tollen’s Test Barfoed’s test Seliwanoff’s test Phenylhydrazine or osazone test
- Answer the following questions (not more than 5 sentences/question). Discuss the correct laboratory technique in using the centrifuge for qualitative analysis. Give two tips on its proper use. Explain how calcium ions are confirmed present in a solid salt by using flame test. Discuss a method to confirm the presence of a) phenol and b) ketone in a test compound. How are proteins confirmed present in a sample? Explain the laboratory process.In a tabular form, enumerate other chemical qualitative tests for carbohydrates, discuss its principle, chemical reagents employed and its positive test result.Create an illustrated step-by-step schematic diagram of the following Qualitative test for Lipids: Baudouin Test Huble’s Test
- Why is the lipid panel lab important for a nutrition assessment?Which of the following tests gives bluish green product due to the presence of carbohydrates?* A. Molisch B. Anthrone C. Benedict D. Seliwanoff E. None of the given optionsTRUE OR FALSE Fat from beef will give positive result to (Ninhydrin test). Table sugar will give positive result to (Benedict test).