The principal character (Biuret reaction) Dubai yuretTo test the protein can be tested by the principal, Bai manner yuret proteins react with CuSO4 solution NaOH or KOH solution at best to have litmus violet in aqueous solution by reaction CuSO4 bass will react with elements of protein are amino acids have litmus violet, which is a complex compound between Cu2 + on nitrogen in the peptide bond is a bond from 2 or more.
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