Mannan

For the god of the sea, see Manannan mac Lir. For the Tamil film, see Mannan (film). For the hate crime victim, see Xulhaz Mannan.

Mannan^[1] may refer to a plant polysaccharide that is a linear polymer of the sugar mannose. Plant mannans have β(1-4) linkages. It is a form of storage polysaccharide. Ivory nut is a source of mannan.

Mannan may also refer to a cell wall polysaccharide found in yeasts. This type of mannan has a α(1-6) linked backbone and α(1-2) and α(1-3) linked branches. It is serologically similar to structures found on mammalian glycoproteins. Detection of mannan leads to lysis in the mannan-binding lectin pathway. This mannan is the source of MOS used as prebiotics in animal husbandry and nutritional supplements.

Etymology

From 'manna', produced by several species of tree and shrub e.g. Fraxinus ornus from whose secretions mannitol was originally isolated.

References

↑ Mannan at the US National Library of Medicine Medical Subject Headings (MeSH)

Types of carbohydrates

General

Geometry

Monosaccharides

Dioses	Aldodiose Glycolaldehyde

Trioses	Aldotriose Glyceraldehyde Ketotriose Dihydroxyacetone

Tetroses	Aldotetroses Erythrose Threose Ketotetrose Erythrulose

Pentoses	Aldopentoses Arabinose Lyxose Ribose Xylose Ketopentoses Ribulose Xylulose Deoxy sugars Deoxyribose

Hexoses	Aldohexoses Allose Altrose Galactose Glucose Gulose Idose Mannose Talose Ketohexoses Fructose Psicose Sorbose Tagatose Deoxy sugars Fucose Fuculose Rhamnose

Heptoses	Ketoheptoses Mannoheptulose Sedoheptulose

Above 7	Octoses Nonoses Neuraminic acid

Multiple

Disaccharides	Cellobiose Isomaltose Lactose Lactulose Maltose Sucrose Trehalose Turanose

Trisaccharides	Maltotriose Melezitose Raffinose

Tetrasaccharides	Stachyose

Other oligosaccharides	Acarbose Fructooligosaccharide (FOS) Galactooligosaccharide (GOS) Isomaltooligosaccharide (IMO) Maltodextrin Mannan-oligosaccharides (MOS)

Polysaccharides	Beta-glucan Oat beta-glucan Lentinan Sizofiran Zymosan Cellulose Chitin Chitosan Dextrin / Dextran Fructose / Fructan Inulin Galactose / Galactan Glucose / Glucan Glycogen Hemicellulose Levan beta 2→6 Lignin Mannan Pectin Starch Amylopectin Amylose Xanthan gum

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Mannan

Etymology

See also

References