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No. The Biuret test only gives a positive result if a peptide bond exists. Phenol doesn't have a peptide bond, so it will not give a positive test.
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If Biuret and Millon's test give positive result what is the conclusion?
The conclusion is that the sample contain proteins.
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
Would glucose give a positive result with the Biuret test?
No because glucose does not consist of two or more peptide bonds
Would cysteine test positive in a biuret test?
no! no change in colour confirms presence of cysteine
Caseine in biuret test?
Casein form a purple compound in the biuret test.
How many of these chemical groupings must be present in a molecule to give a positive biuret test?
you should have at least 2 of these,to obtain a positive result in Biuret's test. because biuret test is a test used to detect if there is peptide linkages.
Will glutamic acid give a positive biuret test?
Amino acids doesn't react with the biuret reagent.
Does pepsin test positive in biuret test?
No
If Biuret and Millon's test give positive result what is the conclusion?
The conclusion is that the sample contain proteins.
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
Is biuret test suitable to test the presence of proteins in the urine?
Yes, the biuret test will indicate the presence of peptides. If it turns violet, it is a positive result.
What color is a positive test for protein?
A positive test, when using Biuret reagent, would be purple-ish
How many chemical grouping must be present in a molecule to give a positive Biuret Test?
You must have at least two, those that will form the peptide linkage (NH2 and COOH) since Biuret test is for detecting peptide linkages.
Would glucose give a positive result with the Biuret test?
No because glucose does not consist of two or more peptide bonds
What is the color of biruet solution?
The biuret solution used in the biuret test for peptide bonds is blue in the absence of peptide bonds or biuret which also results in a positive result. A positive result for peptide bonds or biuret is apparent as the biuret solution turns purple/violet in color.
Why do ibuprofen and naproxen not give a positive test with 1 percent ironIII chloride?
Iron (III) Chloride reacts with the Phenol group. Ibuprofen and Naproxen do not have a phenol group. Acetaminophen, on the other hand, does have a phenol group with would indicate a positive test (purple color change) with in the presence of Iron (III) Chloride.
Would cysteine test positive in a biuret test?
no! no change in colour confirms presence of cysteine
