Ninhydrin test

Ninhydrin test
(for free carboxyl or alpha-amino groups) to a solution of aminoacetic acid and water, a solution of sodium acid is added, followed by a solution of triketohydrindene hydrate. The suspected matter is then added and the mixture is boiled. A violet color indicates a free carboxyl and alpha-amino group from a protein, peptone, peptide, or amino acid. Called also triketohydrindene hydrate t.

Medical dictionary. 2011.

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Look at other dictionaries:

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  • ninhydrin reaction — n a reaction of ninhydrin with amino acids or related amino compounds used for the colorimetric determination of amino acids, peptides, or proteins by measuring the intensity of the blue to violet to red color formed or for the quantitative… …   Medical dictionary

  • Ninhydrin — Strukturformel Allgemeines Name Ninhydrin Andere Namen 2 …   Deutsch Wikipedia

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  • Chemical test — In chemistry, a chemical test is a qualitative or quantitative procedure designed to prove the existence of, or to quantify, a chemical compound or chemical group with the aid of a specific reagent. A presumptive test is specifically used in… …   Wikipedia

  • peptide test — see Ninhydrin t …   Medical dictionary

  • peptone test — see Ninhydrin t …   Medical dictionary

  • protein test — see specific tests, including biuret reaction, Ninhydrin t., and sulfur t …   Medical dictionary

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