0
Xanthoproteic test: a reaction due to the prescence of phenyl group (-C6H5) in the protein molecules. it involves the hnitration of the phenyl rings presnt in the aromatic amino acids such as tyrosine, phenylalanine, and tryptophan, forming yellow nitro-substitution products that turn orange when alkali is added (salt formation) Heller's ring test: this is usd clinically to detect the prescence of albumin in urine. so.... that's basically it... i hope i helped... ^^
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What are the reagents used for Heller's ring test?
asam asetat dengan kadar 1:1.
Will adrenaline give a positive xanthoproteic test?
yes
Why is the xanthoproteic test for phenol negative?
I reckon the answer would be that phenol has a hydroxyl group (-OH) which is bonded to a phenyl ring. It yields the same positive result like tyrosine which has a hydroxyl group bonded to its phenyl ring.
Is Heller's test qualitative or quantitative?
It is quantitative.
What reagent used to test heller's test in protein precipitation?
Nitric acid
What are the results when vasopressin is tested with xanthoproteic?
xanthoproteic test is used to detect the presence of aromatic amino acid in this nitration of an benzee ring with nitric acid takes place.
Heller's ring test?
Heller's Ring test is used to clinically detect the presence of albumin in urine. The presence of albumin is indicated by the formation of white ring at the junction of the solution and concentrated nitric acid
Is albumin positive to xanthoproteic test?
no
Why phenylalanine give negative result with xanthoproteic test?
Phenylalanine gave a yellow to orange color in xanthoproteic test which means it is positive.
What is the medical relevance of heller's test?
Heller's test is commonly used to test for the presence of proteins in urine. The presence of albumin is indicated by formation of a white ring at the junction of the solution and a concentrate solution of nitric acid.
What are the principles involved in xanthoproteic test?
The xanthoproteic test is a test for the detection of proteins. If proteins are present, concentrated nitric acid reacts with the proteins to form a yellow color that turns orange-yellow by the addition of alkali. This is called the xanthoproteic reaction.
What are the reagents used for Heller's ring test?
asam asetat dengan kadar 1:1.
Do albumin gives a positive xanthoproteic test?
I reckon the answer would be that phenol has a hydroxyl group (-OH) which is bonded to a phenyl ring. It yields the same positive result like tyrosine which has a hydroxyl group bonded to its phenyl ring.
Will adrenaline give a positive xanthoproteic test?
yes
What tripeptide will give a positive xanthoproteic test?
No, because phenylalanine does not react with the nitric acid in this test.
Result for Heller's test positive reaction?
Heller's test is used to clinically detect the presence of albumin (protein) in urine.
Why is the xanthoproteic test for phenol negative?
I reckon the answer would be that phenol has a hydroxyl group (-OH) which is bonded to a phenyl ring. It yields the same positive result like tyrosine which has a hydroxyl group bonded to its phenyl ring.
