ninhydrin

nin·hy·drin

(nin-hī'drin), A substance that Reacts with free amino acids to yield CO₂, NH₃, and an aldehyde, the NH₃ further yielding a colored product (diketohydrindylidene-diketohydrindamine, a bi-indanedione derivative also called Ruhemann purple).
See also: ninhydrin reaction.

ninhydrin

An oxidising reagent that reacts with amino acids and proteins, which is used to screen urine specimens for presence of, and semiquantify, alpha-amino acids as the specimen changes colours.

ninhydrin

Triketohydrindene Clinical toxicology An oxidizing reagent that reacts with amino acids and proteins, used to screen urine specimens for presence of, and semiquantify, α-amino acids, as it changes colors

nin·hy·drin

(nin-hī'drin) Triketohydrindene, an analytic reagent that reacts with free amino acids to yield CO₂, NH₃, and an aldehyde, the NH₃ produced yielding a colored product.
See also: ninhydrin reaction[Ger. trade name, fr. the chemical name]

ninhydrin

a reagent used to detect AMINO ACIDS by the blue colour produced (yellow with proline). The quantity of the amino acid is proportional to the ABSORBANCE of the solution after reaction with ninhydrin. The technique can be used to detect amino acids on chromatograms, for example (see CHROMATOGRAPHY).

单词	ninhydrin
释义	ninhydrin ninhydrin (nɪnˈhaɪdrɪn) n (Biochemistry) a chemical reagent used for the detection and analysis of primary amines, esp amino acids, with which it forms a derivative with an intense purple colour[C20: from the chemical name triketo hydrindene] Translations ninhydrin ninhydrin [nin′hī·drən] (organic chemistry) C₉H₄O₃·H₂O White crystals or powder with a melting point of 240-245°C; soluble in water and alcohol; used for the detection and assay of peptides, amines, amino acids, and amino sugars. Also known as triketohydrindene hydrate. ninhydrin nin·hy·drin (nin-hī'drin), A substance that Reacts with free amino acids to yield CO₂, NH₃, and an aldehyde, the NH₃ further yielding a colored product (diketohydrindylidene-diketohydrindamine, a bi-indanedione derivative also called Ruhemann purple). See also: ninhydrin reaction. ninhydrin An oxidising reagent that reacts with amino acids and proteins, which is used to screen urine specimens for presence of, and semiquantify, alpha-amino acids as the specimen changes colours. ninhydrin Triketohydrindene Clinical toxicology An oxidizing reagent that reacts with amino acids and proteins, used to screen urine specimens for presence of, and semiquantify, α-amino acids, as it changes colors nin·hy·drin (nin-hī'drin) Triketohydrindene, an analytic reagent that reacts with free amino acids to yield CO₂, NH₃, and an aldehyde, the NH₃ produced yielding a colored product. See also: ninhydrin reaction[Ger. trade name, fr. the chemical name] ninhydrin a reagent used to detect AMINO ACIDS by the blue colour produced (yellow with proline). The quantity of the amino acid is proportional to the ABSORBANCE of the solution after reaction with ninhydrin. The technique can be used to detect amino acids on chromatograms, for example (see CHROMATOGRAPHY).
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