ninhydrin

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Related to Ninhydrin assay: ninhydrin reaction, Ninhydrin protein assay

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).