Ketose

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A ketose is a sugar containing one ketone group per molecule.

With 3 carbon atoms, dihydroxyacetone is the simplest of all ketoses and is the only one having no optical activity. Ketoses can isomerize into an aldose when the carbonyl group is located at the end of the molecule. Such ketoses are reducing sugars.

[edit] List of ketoses

• Trioses: dihydroxyacetone
• Tetroses: erythrulose
• Pentoses: ribulose, xylulose
• Hexoses: fructose, psicose, sorbose, tagatose

[edit] Qualitative reaction

General qualitative reaction for ketoses is Seliwanoff's test.

[edit] See also

• Carbohydrate
• Monosaccharide
• Aldose

v • d • e Types of Carbohydrates General: Aldose | Ketose | Pyranose | Furanose Geometry Triose | Tetrose | Pentose | Hexose | Heptose | Cyclohexane conformation | Anomer | Mutarotation Small/Large Glyceraldehyde | Dihydroxyacetone | Erythrose | Threose | Erythrulose | Sedoheptulose Trioses Ketotriose (Dihydroxyacetone) | Aldotriose (Glyceraldehyde) Tetroses Erythrulose | Erythrose | Threose Pentoses Arabinose | Deoxyribose | Lyxose | Ribose | Ribulose | Xylose | Xylulose Hexoses Glucose | Galactose | Mannose | Gulose | Idose | Talose | Allose | Altrose | Fructose | Sorbose | Tagatose | Psicose | Fucose | Fuculose | Rhamnose Disaccharides Sucrose | Lactose | Trehalose | Maltose Polymers Glycogen | Starch (Amylose | Amylopectin) | Cellulose | Chitin | Stachyose | Inulin | Dextrin Glycosaminoglycans Heparin | Chondroitin sulfate | Hyaluronan | Heparan sulfate | Dermatan sulfate | Keratan sulfate Aminoglycosides Kanamycin | Streptomycin | Tobramycin | Neomycin | Paromomycin | Apramycin | Gentamicin | Netilmicin | Amikacin Major families of biochemicals Peptides | Amino acids | Nucleic acids | Carbohydrates | Nucleotide sugars | Lipids | Terpenes | Carotenoids | Tetrapyrroles | Enzyme cofactors | Steroids | Flavonoids | Alkaloids | Polyketides | Glycosides