Ninhydrin test: Principle, Reaction | 水果好營養
2020年4月3日—Thedevelopmentofviolet-bluecolourconfirmsthepresenceofaminoacid.Resultinterpretation:Positivetest:Blue-purpleandyellowreaction ...
Ninhydrin test
Detection of all amino acids, peptides and proteins
Ninhydrin (triketohydrindene hydrate) is used to assess amino acid qualitatively and quantitatively in ninhydrin reaction. All amino acids having α amino group, when heated in excess of ninhydrin give a purple coloured product. Only proline and hydroxyproline- amino acids molecules which contain a secondary amino group produce yellow condensation product. The colour intensity is proportional to the concentration of amino acid i.e. ammonia from the amino groups.
Image source: https://byjus.com/chemistry/ninhydrin-test/
Proteins also contain free amino groups on the alpha carbon and can react with ninhydrin to produce a blue-purple product. That is why the reaction with ninhydrin is u...
Ninhydrin | 水果好營養
Ninhydrin Test - Reaction, Principle, Procedure | 水果好營養
Ninhydrin Test | 水果好營養
Ninhydrin Test Principle, Procedure | 水果好營養
Ninhydrin Test – Explanation, Reaction | 水果好營養
Ninhydrin Test – Explanation, Reaction | 水果好營養
Ninhydrin Test- Definition, Principle, Procedure | 水果好營養
Ninhydrin Test: Definition, Principle | 水果好營養
Ninhydrin test: Principle, Reaction | 水果好營養
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