The correct structure of Rhumann's Purple, the compound formed in the reaction of ninhydrin with proteins is:
Biomolecules · Class 12 · JEE Main Previous Year Question
The correct structure of Rhumann's Purple, the compound formed in the reaction of ninhydrin with proteins is:
- a
Option a
- b✓
Option b
- c
Option c
- d
Option d
Option b
Step 1: Ninhydrin Reaction — Ninhydrin is a standard reagent used to detect amino acids and proteins through a colorimetric reaction.
Step 2: Complex Formation — Reaction between ninhydrin and an -amino acid results in oxidative deamination followed by condensation to form a deep purple complex.
Step 3: Identifying the Structure — This complex, known as , is correctly represented by structure (b) in the provided imagery. Correct option is (b).
Key Point: The intensity of the purple color is proportional to the concentration of the amino acid.
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