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An unknown sample is tested with both biuret reagent and benedicts reagent both test result in a blue color what has been learned and why are these called negative results?
Wiki User
∙ 12y ago
That the unknown sample is not a monosaccharide and is does not contain peptide bonds (is not a protein). This is because they both produced negative results because Biuret tests positive in solutions that contain peptide bonds and will turn a violet color. Benedict reagent reacts to monosaccharides and will turn green-reddish orange when a monosaccharide is present. Neither of these things happened so the results are negative.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agoit means that it contains non-reducing sugar :P
Wiki User
∙ 13y agoBiuret's Solution: No proteins are present.
Benedict's Solution: No reducing sugars are present.
Wiki User
∙ 13y agoI don't know I want to know too.
Wiki User
∙ 12y agoit contains non-reducing sugar
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