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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.
Yes, the biuret test will indicate the presence of peptides. If it turns violet, it is a positive result.
Yes. The Biuret test is a test for the presence of peptide bonds. Since albumin is a class of protein, and proteins are composed of many amino acids joined together by peptide bonds, the test will yield a positive result.
by conducting the biuret test. the positive result of biuret test will give you the purple blue ring on top of the solution.(albumen/milk + cuso4 +NaOH)
Proteins are made of peptide bonds which is the target of reaction for biuret test. It's not truly specific for proteins; biuret itself also gives a positive result (hence the name of the test). However, proteins are fairly common and biuret (and similar peptide-containing compounds) are relatively rare.
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.
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.
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.
The conclusion is that the sample contain proteins.
Yes, the biuret test will indicate the presence of peptides. If it turns violet, it is a positive result.
If Biuret Reagent is related to the presence of Protein macromolecules, then a positive result will change it's colour from blue to violet.
No because glucose does not consist of two or more peptide bonds
Yes. The Biuret test is a test for the presence of peptide bonds. Since albumin is a class of protein, and proteins are composed of many amino acids joined together by peptide bonds, the test will yield a positive result.
It shouldn't test positive. The Biuret test is only positive for a peptide or protein with 2 or more peptide bonds. Glycine is an individual amino acid. You'll see the blue from the Cu2+ with Glycine, but that's a negative result. A violet color is the positive.
by conducting the biuret test. the positive result of biuret test will give you the purple blue ring on top of the solution.(albumen/milk + cuso4 +NaOH)
Proteins are made of peptide bonds which is the target of reaction for biuret test. It's not truly specific for proteins; biuret itself also gives a positive result (hence the name of the test). However, proteins are fairly common and biuret (and similar peptide-containing compounds) are relatively rare.
Remember that when dividing two negative values, we obtain a positive result. The signs case for product is the same for this case.