Seliwanoff's test is used to distinguish aldoses from ketoses. On treatment with a concentrated Acid, ketoses are dehydrated more rapidly to give furfural derivatives and on condensation with resorcinol give cherry red complex. The test will be answered by fructose, sucrose and other keto containing carbohydrates.
Seliwanoff's test is a chemical test which distinguishes between aldose and ketose sugars. ... If it is a ketose sugar like fructose and sucrose is the solution turns cherry red . If it is a aldose sugar then a faint pink color may appear.
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