Qualitative Tests for amino acids and Proteins

General test for amino acids and proteins:

Following are the qualitative test to detect amino acids and protein in a given solution.

1. Ninhydrin test: general test for all amino acids
2. Biuret test: general test for compound having peptide bond

 

Specific test for specific amino acids:

1. Foli’s test ( lead sulfide test): test for cysteine
2. Pauly’s test: test for tyrosine
3. Adamkiewicz test ( Hopkin’s-Cole test): test for tryptophan
4. Sakaguchi test: test for arginine
5. Xanthoproteic test: test for tyrosine, tryptophan and phenylalanine*)
6. Million’s test: test for tyrosine

Qualitative Tests for amino acids and Proteins