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Title: Why is that a starch, which is a substance composed of many glucose molecules,is negative in Benedict reagent? Post by: Lena on Feb 5, 2013 My conclusion is that starch is a polysaccharides not a glucose, so it would be hard for Benedict solution to break down the cluster of glucose in starch.
I am not sure about this, so I need to know if I was right or wrong. Please explain why. Title: Why is that a starch, which is a substance composed of many glucose molecules,is negative in Benedict reagent? Post by: |R2r| on Feb 5, 2013 Benedict's reagent detects reducing ends of sugars.
Starch is a macromolecule that will only have a few reducing ends at the end of chains, so there is little to detect. |