Ketose

From Wikipedia, the free encyclopedia

Fructose, an example of a ketose. The ketone group is the double-
bonded oxygen.

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

This biochemistry article is a stub. You can help Wikipedia by expanding it.

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

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Ketose

From Wikipedia, the free encyclopedia

[edit] List of ketoses

[edit] Qualitative reaction

[edit] See also

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