Is Seliwanoff test positive for fructose?

Sourav PanApril 21, 2025

Answered

Yes, the Seliwanoff test is positive for fructose. Fructose, being a ketose sugar, reacts with resorcinol in the presence of hydrochloric acid to form a red or pink color. This color change occurs rapidly, typically within 1-2 minutes, making it easy to distinguish fructose from other sugars.

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