Will a Dipeptide Give a Positive Biuret Test?

Another very common test for protein is the biuret reaction. This is a test for peptide linkages and is positive when two or more peptide linkages are present; thus, a dipeptide does not react with the biuret reagent.

What gives a positive biuret?

Ans. Histidine is the only amino acid that gives a positive result to the Biuret test.

Which of the following will give a positive biuret test?

Biuret test positive:

Histidine is the only amino acid that give biuret test positive.