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What samples did not give a positive test with xanthoproteic test why?
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Is albumin positive to xanthoproteic test?
no
Does human insulin give positive xanthoproteic test?
No because it doesn't contain aromatic group
What tripeptide will give a positive xanthoproteic test?
No, because phenylalanine does not react with the nitric acid in this test.
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.
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
Why phenylalanine give negative result with xanthoproteic test?
Phenylalanine gave a yellow to orange color in xanthoproteic test which means it is positive.
Is albumin positive to xanthoproteic test?
no
Does human insulin give positive xanthoproteic test?
No because it doesn't contain aromatic group
What tripeptide will give a positive xanthoproteic test?
No, because phenylalanine does not react with the nitric acid in this test.
Why glysine give negative result in xanthoproteic test?
No because it doesn't contain aromatic group
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 functional group gives a positive test in the xanthoproteic test?
The xanthproteic test gives a positive result when proteins with amino acids carrying aromatic groups are present. Aromatic groups are functional groups consisting of a 6 hydrocarbons with alternating double and single bonds between carbon atoms forming rings.
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.
All amino acid having an aromatic ring give a positive xanthoproteic test under identical condition?
yes! but actually for phenylalanine it just weakly positive or negative because the aromatic ring is not activated so it is not give the positive result...phenylalanine need certain condition to give positive result
What is the color changed for positive results in every samples in millon test?
4
Which halogens give a positive beilstein test?
which halogens give a positive beilstein test?
