Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various carbohydrates containing a ketone group.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A saccharide containing a ketone functional group.
from The Century Dictionary and Cyclopedia
- n. A class-name applied in organic chemistry to sugars, such as fructose, containing a ketone group.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any monosaccharide sugar that contains a ketone group or its hemiacetal
Etymologies
Sorry, no etymologies found.
Examples
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I had been looking for evidence of proton transfer in enzymes that catalyzed aldose-ketose interconversions.
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As shown in Table 1, isomerases that are specific for 2R-aldoses were found to activate the 1-R proton of the ketose produced.
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If now the aldose groups tend to pass over into the starch form, representing a temporary overflow product of the assimilating energy, it would appear that the ketose or levulose groups are preferentially used up in the elaboration of the permanent tissue.
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The reason it is a 4 membered ring is because it is a ketose, as opposed to an aldose.
Comments
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