Proteins when heated with conc. HNO3 , give a yellow colour. This is

Question

Proteins when heated with conc. HNO3 , give a yellow colour. This is (A) oxidising test (B) xanthoprotic test (C) Hoppes test (D) acid-base test

Tardigrade Admin · Accepted Answer

Xanthoprotic test Protein + conc. HNO3 arrow yellow colour This test is given by the protein which consists of α-amino acids containing a benzene ring such as tyrosine, phenyl alanine etc. This yellow colour is due to nitration of benzene ring.

Q. Proteins when heated with conc. $H N O_{3}$ , give a yellow colour. This is

oxidising test

xanthoprotic test

Hoppes test

acid-base test

Xanthoprotic test
Protein + conc. $H N O_{3} \to$ yellow colour
This test is given by the protein which consists of $α$ -amino acids containing a benzene ring such as tyrosine, phenyl alanine etc. This yellow colour is due to nitration of benzene ring.

Q. Proteins when heated with conc. HNO3​ , give a yellow colour. This is