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What is the difference in results for sucrose and hydrolyzed sucrose when reacted with Benedict's reagent?

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter63: Carbohydrates And Sweeteners

Section: Chapter Questions

Problem 4Q

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.

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What is the difference in results for sucrose and hydrolyzed sucrose when reacted with Benedict's reagent?

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1mL of Benedict's reagent is added to 1mL of the test solution. The mixture is then heated for 5 minutes in water bath. Appearance of reddish-brown precipitates indicates the presence of a reducing sugar. Glucose and Fructose give a positive result. Sucrose on the other hand gives a negative result. Explain why sucrose give a negative result when subjected to a Benedict's test.
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