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the test is to determine if the substance you are testing has protein in it

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13y ago

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Does pepsin test positive in biuret test?

Pepsin does not test positive in the biuret test. The biuret test is used to detect the presence of proteins in a solution, which contain peptide bonds. Pepsin is an enzyme that breaks down proteins into smaller peptides, so it does not give a positive result in the biuret test.


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.


Does phenol give a positive biuret test?

No, phenol does not give a positive biuret test. The biuret test is used to detect the presence of proteins, not phenol. Phenol is a type of organic compound that does not contain the peptide bonds that the biuret test reacts with.


What colour is biuret before test?

Biuret solution is typically blue-violet in color before the test.


Caseine in biuret test?

The biuret test is a colorimetric assay used to detect proteins based on their peptide bonds. Casein is a protein found in milk that contains numerous peptide bonds, making it a suitable candidate for the biuret test. When casein is subjected to the biuret reagent, it forms a purple complex indicating the presence of proteins.


What is the reagent used to test proteins?

The reagent commonly used to test for proteins is Biuret reagent. It reacts with peptide bonds in proteins to form a color change, ranging from blue (negative) to purple (positive), indicating the presence of proteins in the sample.


What test would you run to test for the presence of a polypeptide?

Biuret test


How many of these chemical groupings must be present in a molecule to give a positive biuret test?

At least two peptide bonds must be present in a molecule to give a positive biuret test. The biuret reagent interacts with peptide bonds in proteins, forming a colored complex that can be detected visually.


What is the purpose of conducting the biuret test for protein and how does it help in identifying the presence of proteins in a sample?

The purpose of conducting the biuret test for protein is to detect the presence of proteins in a sample. This test relies on the reaction between proteins and copper sulfate in an alkaline solution, which results in a color change from blue to purple if proteins are present. This color change helps in identifying the presence of proteins in the sample.


What is the name of the test for proteins?

The test for proteins is called the Biuret test. This test is based on the principle that proteins react with copper sulfate in an alkaline solution to produce a violet color.


How you test if foods have proteins?

The Biuret test allows one to test for proteins.


Will glutamic acid give a positive biuret test?

Amino acids doesn't react with the biuret reagent.