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daTALLsmurf2 daTALLsmurf2
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11 years ago
Name and describe the test and why should it be used.
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11 years ago
Seliwanoff?s test (resorcinol + HCl or H2SO4) distinguishes fructose from glucose.  A positive test for fructose is a red precipitate.  

You might think that Fehling's solution would distinguish an aldose from a ketose, but it doesn't work because under the conditions, fructose can rearrange to glucose, which is reduced.
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