Asked by: Chantell Wagemannsasked in category: General Last Updated: 14th May, 2020
What does Benedict's solution detect?
Also, what color does Benedict's solution turn when positive?
A positive test with Benedict's reagent is shown by a color change from clear blue to a brick-red precipitate. Generally, Benedict's test detects the presence of aldehydes and alpha-hydroxy-ketones, also by hemiacetal, including those that occur in certain ketoses.
Furthermore, how does Benedict's solution react with glucose? When glucose is mixed with Benedict's reagent and heated, a reduction reaction causes the Benedict's reagent to change color. The color varies from green to dark red (brick) or rusty-brown, depending on the amount of and type of sugar. Glucose never gives violet colour precipitate with Benedict's solution.
Herein, how does Benedict's solution work?
Benedict's reagent is made by complexing Cu+2 (from Copper sulfate) ions with citric acid in a basic medium(Sodium Carbonate. Benedict's Reagent is used to detect reducing sugars. When this happens the color of the reagent turns from blue to colorless by the reduction of copper(II) to Copper(I) that is colorless.
What does a positive Benedict's test look like?
Interpreting Benedict's Reagent Results In general, blue to blue-green or yellow-green is negative, yellowish to bright yellow is a moderate positive, and bright orange is a very strong positive.