Reducing sugars:
Mix the solution with a few drops of Benedict's reagent.
If the solution turns from blue to red, a reducing sugar is present.
Non-reducing Sugars:
Do the test for reducing sugars to make sure no reducing sugars are present.
Mix the solution with dilute Hydrochloric acid and heat it.
Perform the Benedict's test again.
If you get a negative result the first time, and a positive result the second time, a non-reducing sugar is present.
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