Xylan
Xylan (CAS number: 9014-63-5) is a type of highly complex polysaccharides that are found in plant cell walls and some algae. Xylans are polysaccharides made from units of xylose (a pentose sugar). Xylans are almost as ubiquitous as cellulose in plant cell walls and contain predominantly β-D-xylose units linked as in cellulose.
Xylan is found in the cell walls of some green algae, especially macrophytic siphonous genera, where it replaces cellulose. Similarly, it replaces the inner fibrillar cell-wall layer of cellulose in some red algae.
Xylan is one of the foremost anti-nutritional factors in common use feedstuff raw materials.
xylooligosaccharides produced from xylan are considered as "functional food" or dietary fibers.[1] New Enzymes from yeast are discovered which exclusively converts xylan into only xylooligosaccharides-DP-3 to 7[2]
References
(1)Alonso, J.L., Dominguez, H., Garrote, G., Parajo, J.C., Vazquez, M.J., 2003. Xylooligosaccharides: properties and production technologies. Electron. J. Environ. Agric. Food. Chem. 2, 230–232. (2)M.G. Adsul et al. / Bioresource Technology 100 (2009) 6488–6495, doi:10.1016/j.biortech.2009.07.064