difference between aldose and ketose?

Answer 1

Aldose has one aldehyde/molecule and has a double carbon and oxygen bond.
Ketose has one ketone/molecule and has the unique double carbon to carbon bond. Ketose also has no optical properties, which is one way that is being developed to detect blood sugar concentration.

A carbonyl carbon bonded to two carbon atoms distinguishes ketones from carboxylic acids, aldehydes, esters, amides, and other oxygen-containing compounds. The double-bond of the carbonyl group distinguishes ketones from alcohols and ethers.

Both are simple sugars.

According to Wikipedia: http://en.wikipedia.org/wiki/Aldose
"An aldose is a monosaccharide (a simple sugar) containing one aldehyde group per molecule and having a chemical formula of the form CnH2nOn, (n>=3).

With only 3 carbon atoms, glyceraldehyde is the simplest of all aldoses."

According to Wikipedia: http://en.wikipedia.org/wiki/Aldehyde
"An aldehyde is an organic compound containing a terminal carbonyl group. This functional group, which consists of a carbon atom which is bonded to a hydrogen atom and double-bonded to an oxygen atom (chemical formula O=CH-), is called the aldehyde group. The aldehyde group is also called the formyl or methanoyl group...

The aldehyde group is polar. Oxygen, more electronegative than carbon, pulls the electrons in the carbon-oxygen bond towards itself, creating an electron deficiency at the carbon atom.

According to Wikipedia: http://en.wikipedia.org/wiki/Ketose
"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."

According to Wikipeida: http://en.wikipedia.org/wiki/Ketone
A ketone (pronounced as key tone) is either the functional group characterized by a carbonyl group (O=C) linked to two other carbon atoms or a chemical compound that contains this functional group. A ketone can be generally represented by the formula:

R1(CO)R2.

A carbonyl carbon bonded to two carbon atoms distinguishes ketones from carboxylic acids, aldehydes, esters, amides, and other oxygen-containing compounds. The double-bond of the carbonyl group distinguishes ketones from alcohols and ethers. The simplest ketone is acetone (systematically named 2-propanone)."

Answer 2

Aldose Vs Ketose

Answer 3

Aldoses And Ketoses

Answer 4

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difference between aldose and ketose?