rhamnose

[ram-nohs, -nohz]

noun

Biochemistry.

1. deoxymannose; a deoxy hexose sugar, C 6 H 1 2 O 5 , that is an important component of the polysaccharides of plant cell walls.

Word History and Origins

Origin of rhamnose¹

< German (1887), equivalent to Greek rhámn ( os ) thorn bush + German -ose -ose ²

Example Sentences

DCA, deoxycholic acid; Rha, rhamnose.

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DCA, deoxycholic acid; Rha, rhamnose.

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Chrysophanic acid, a dioxymethylanthraquinone, occurs in rhubarb, which also contains emodin, a trioxymethylanthraquinone; this substance occurs in combination with rhamnose in frangula bark.

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Although glucose is the commonest sugar present in glucosides, many are known which yield rhamnose or iso-dulcite; these may be termed pentosides.

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Quercitrin, C21H22O12, is a yellow dyestuff found in Quercus tinctoria; it hydrolyses to rhamnose and quercetin, a dioxy-β-phenyl-trioxybenzo-γ-pyrone.

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