About Lesson
Reaction to test protein in lab
a) Biuret test:
- Formation of violet coloration confirms the presence of protein.
b) Xanthoproteic test:
c) Millon’s test:
- Phenolic group of tyrosine and protein react with mercuric sulfate in presence of sodium nitrate and sulfuric acid to give red color.
d) Ninhydrin test:
- Presence of violet color confirms presence of protein