Definition: 'Ninhydrin Reaction'
ninhydrin reactionType: Term
1. a test for proteins, peptones, peptides, and amino acids possessing free carboxyl and α-amino groups that is based upon the reaction with triketohydrindene hydrate; a blue color reaction is used to quantitate free amino acids (after hydrolysis and separation of the amino acids of a protein).
Synonyms: triketohydrindene reaction
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