Answered: 2. Biuret Test Color of 3% CuSO4… | bartleby

Complete Textbook Of Phlebotomy

Complete Textbook Of Phlebotomy

5th Edition

ISBN:9781337464314

Author:Hoeltke

Publisher:Hoeltke

Chapter10: Sample Preparation And Handling

Section: Chapter Questions

Problem 3.1E

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Question

Experiment

AMINO ACIDS AND PROTEINS

2. Biuret Test
Color of 3% CuSO4 solution:
Sample
casein
alanine
albumin
gelatin
distilled water
3. Molisch Test
Color of Molisch reagent:
Sample
glutamic acid
casein
gelatin
4. Xanthoproteic Test
Color of concentrated HNO3:
Sample
glutamic acid
tyrosine
casein
albumin
gelatin
Color of original solution
Color of original
solution
Color of original
solution
Color after NaOH/CuSO4
Color after Molisch
Reagent
Color after HNO3
Color at the interface
Color after NH4OH

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