Ketose

Ketose is a type of monosaccharide that contains a ketone group. The simplest ketose is dihydroxyacetone, which has three carbon atoms, and is the only one that does not have optical activity. Other ketoses include fructose, psicose, sorbose, and tagatose.

Structure and classification

Ketoses are classified based on the number of carbon atoms present. Trioses, tetrose, pentoses, hexoses, and heptoses are ketoses that contain three, four, five, six, and seven carbon atoms, respectively. Ketoses can also be classified as D or L, depending on the orientation of the hydroxyl group on the penultimate carbon atom.

Biochemistry

In biochemistry, ketoses are important in several metabolic pathways. Fructose, for example, is a key component of the glycolysis pathway, which breaks down glucose to produce energy. Ketoses can also be converted into amino acids, lipids, and other important biological molecules.

Health implications

High levels of ketoses in the body can lead to a condition called ketosis, which can be dangerous if not managed properly. This is often seen in people with diabetes, and can also occur in people following a ketogenic diet.

See also

• Monosaccharide
• Ketone
• Dihydroxyacetone
• Fructose
• Psicose
• Sorbose
• Tagatose
• Glycolysis
• Ketosis
• Ketogenic diet

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