Xylan

Structural description

Xylan is a wide family of highly complex polysaccharides that are found in plant cell walls (Hardwood such as birch, larch woods) and some algae. Xylan, the most abundant of the hemicelluloses in plant cell walls, has a linear backbone structure consisting of β-D-(1-4) linked xylosyl residues that, depending on its origin, may contain branches of L-arabinofuranosyl, acetyl, D-glucuronosyl and 4-O-methylglucuronosyl residues.

Xylans are cell wall constituants:

  • Of some green algae (mainly macrophytic siphonous genera, like Codium, Caulerpa or Bryopsis Genus). The linear backbone structure is then based on β-D-(1-3)-xylose chain.

  • Of some red algae (Nemaliales and Palmariales). According to their origins, they may be made of β(1-3) and/or β(1-4)-D-xylose residues and may contain galactopyranosyl, uronic acids, sulfate and phosphate residues.

Activities and Uses

Xylan represents an interesting source of raw material for the preparation of modified polysaccharides with novel biological activities. In particular, anticoagulant, antithrombotic and antiviral activities has been shown for sulphated or phosphorylated xylan polysaccharides (P. Mandal, et al., Int. J. Biol. Macromol.2010).

Recommended paper:E. Deniaud et al. International Journal of Biological Macromolecules ; 33 (2003) 9–18.

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Xylan

Xylan polysaccharide from Palmaria palmata - 1 g

Xylan polysaccharide from Palmaria palmata - 1 g
trait
XYL100

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Xylan polysaccharide from Palmaria palmata
β(1-3) & β(1-4) D-xylose linked polymer
Xylan

Glucurono- Arabinoxylan polysaccharide from wheat bran - 100 mg

trait
XYL101

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Glucurono-Arabinoxylan polysaccharide from wheat bran
β(1-4)-D-xylose linked polymer branched with
arabinose and glucuronic acid.
Xylan

Xylan oligosaccharides XOs (Cut-offinf.10kDa) - 10 mg

Xylan oligosaccharides XOs (Cut-offinf.10kDa) - 10 mg
trait
XYL110

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Xylan oligosaccharides (XOs) purified by 10kDa cut-off ultrafiltration
Xylan

Xylan oligosaccharides XOs (cut-off: 650Da<->3kDa) - 10 mg

Xylan oligosaccharides XOs (cut-off: 650Da<->3kDa) - 10 mg
trait
XYL111

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Xylan oligosaccharides (XOs) are obtained from
Palmaria palmata polysaccharide hydrolysis