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Ketose
bonded oxygen.
In organic chemistry, a ketose is a monosaccharide containing one ketone (>C=O) group per molecule.[1][2] The simplest ketose is dihydroxyacetone ((CH2OH)2C=O), which has only three carbon atoms. It is the only ketose with no optical activity. All monosaccharide ketoses are reducing sugars, because they can tautomerize into aldoses via an enediol intermediate, and the resulting aldehyde group can be oxidised, for example in the Tollens' test or Benedict's test.[3] Ketoses that are bound into glycosides, for example in the case of the fructose moiety of sucrose, are nonreducing sugars.[3]
- ^ Lindhorst, Thisbe K. (2007). Essentials of Carbohydrate Chemistry and Biochemistry (1st ed.). Wiley-VCH. ISBN 978-3-527-31528-4.
- ^ Robyt, John F. (1997). Essentials of Carbohydrate Chemistry (1st ed.). Springer. ISBN 0-387-94951-8.
- ^ a b McMurry, John E. (2010-01-01). Organic Chemistry: With Biological Applications. Cengage Learning. p. 880. ISBN 978-0495391449.
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