Arabinoxylan

Structural formula
	No structural formula available
General
Surname	Arabinoxylan
CAS number	9040-27-1
properties
safety instructions
GHS labeling of hazardous substances	no classification available
	no classification available
H and P phrases	H: see above
	P: see above
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Arabinoxylan is a hemicellulose that occurs in plant cell walls, both in woody plants and in cereal plants . As indigestible components of food , they belong to the dietary fiber group . Arabinoxylan consists of copolymers of two pentoses , arabinose and xylose .

structure

Arabinoxylans consist of numerous catenary 1,4-linked xylose - monomers . Many of these xylose units are simply substituted with 2- or 3- or twice with 2,3-linked arabinose . Depending on the respective fine structure and chain length, arabinoxylans belong to the insoluble or soluble dietary fibers.

Functions

Arabinoxylans are an essential structural component of plant cells. They are also the carrier substance for ferulic acid and other phenolic acids , which are covalently bound to arabinoxylan. Phenolic acids are u. a. involved in plant defense mechanisms, e.g. B. Fight fungal infections.

Arabinoxylans may have health benefits for humans. The phenolic acids bound to arabinoxylans are also relevant, as they act as antioxidants . Arabinoxylans also influence the iron balance and, due to their viscosity, have an effect on the intestinal function .

Individual evidence

↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ L McCartney: Monoclonal Antibodies to Plant Cell Wall Xylans and Arabinoxylans . In: Journal of Histochemistry and Cytochemistry . 53, 2005, pp. 543-546. doi : 10.1369 / jhc.4b6578.2005 .
↑ G Dervilly-Pinel: Investigation of the distribution of arabinose residues on the xylan backbone of water-soluble arabinoxylans from wheat flour . In: Carbohydrate Polymers . 55, 2004, pp. 171-177. doi : 10.1016 / j.carbpol.2003.09.004 .
↑ Kazuyuki Wakabayashi, Kouichi Soga, Seiichiro Kamisaka, Takayuki Hoson: Increase in the level of arabinoxylan-hydroxycinnamate network in cell walls of wheat coleoptiles grown under continuous hypergravity conditions. In: Physiologia Plantarum. 125, 2005, p. 127, doi : 10.1111 / j.1399-3054.2005.00544.x .
↑ MS Izydorczyk, JE Dexter: Barley β-glucans and arabinoxylans: Molecular structure, physicochemical properties, and uses in food products - a review . In: Food Research International . 41, 2008, pp. 850-868. doi : 10.1016 / j.foodres.2008.04.001 .
↑ RS Rao, G Muralikrishna: Water soluble feruloyl arabinoxylans from rice and ragi: changes upon malting and their consequence on antioxidant activity . In: Phytochemistry . 67, September, pp. 91-9. doi : 10.1016 / j.phytochem.2005.09.036 . PMID 16289622 .
^ F Guillon, M Champ: Structural and physical properties of dietary fibers, and consequences of processing on human physiology . In: Food Research International . 33, 2000, pp. 233-245. doi : 10.1016 / s0963-9969 (00) 00038-7 .

[NV-1] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[2] L McCartney: Monoclonal Antibodies to Plant Cell Wall Xylans and Arabinoxylans . In: Journal of Histochemistry and Cytochemistry . 53, 2005, pp. 543-546. doi : 10.1369 / jhc.4b6578.2005 .

[3] G Dervilly-Pinel: Investigation of the distribution of arabinose residues on the xylan backbone of water-soluble arabinoxylans from wheat flour . In: Carbohydrate Polymers . 55, 2004, pp. 171-177. doi : 10.1016 / j.carbpol.2003.09.004 .

[DOI10.1111/j.1399-3054.2005.00544.x-4] Kazuyuki Wakabayashi, Kouichi Soga, Seiichiro Kamisaka, Takayuki Hoson: Increase in the level of arabinoxylan-hydroxycinnamate network in cell walls of wheat coleoptiles grown under continuous hypergravity conditions. In: Physiologia Plantarum. 125, 2005, p. 127, doi : 10.1111 / j.1399-3054.2005.00544.x .

[5] MS Izydorczyk, JE Dexter: Barley β-glucans and arabinoxylans: Molecular structure, physicochemical properties, and uses in food products - a review . In: Food Research International . 41, 2008, pp. 850-868. doi : 10.1016 / j.foodres.2008.04.001 .

[6] RS Rao, G Muralikrishna: Water soluble feruloyl arabinoxylans from rice and ragi: changes upon malting and their consequence on antioxidant activity . In: Phytochemistry . 67, September, pp. 91-9. doi : 10.1016 / j.phytochem.2005.09.036 . PMID 16289622 .

[7] F Guillon, M Champ: Structural and physical properties of dietary fibers, and consequences of processing on human physiology . In: Food Research International . 33, 2000, pp. 233-245. doi : 10.1016 / s0963-9969 (00) 00038-7 .