How does xanthoproteic test differ from heller rings test?
Answer:
Hi
i will help u.
read both the tests..
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XANTHOPROTEIC TEST
a test for the detection of proteins in which concentrated nitric acid reacts with the proteins to form a yellow color that is intensified to orange-yellow by the addition of alkali - called also xanthoproteic reaction .
to see the exact reaction...and video
click
http://www.uniregensburg.de/fakultaeten/...
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HELLER'S RING TEST
A test for albumin in urine
presence of albumin is indicated by formation of a white ring at the junction of the solution and a concentrate solution of nitric acid.
Heller's Nitric-Acid Test....requires a little more care in the test, and is no more reliable....
here the experiment.
*Put a little nitric acid into the test-tube, and then carefully pour a little urine down the side of the tube...
*As it comes in contact with the acid, a white ring is formed at the point of contact.. ..
*Uric acid, urates, and certain coloring matters, form a pink or red zone, which is just above the junction of the two liquids...
Hemialbumose will give the same white zone, but does not respond to the boiling test as does serum-albumin...
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Hope this is the best answer...
all the best
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