1.0 2010-04-08 22:04:51 UTC 2020-09-17 15:42:07 UTC FDB001133 Xylan Xylan is a group of hemicelluloses, representing the third most abundant biopolymer on Earth. It is found in plants, in the secondary cell walls of dicotyledonous plants and in all cell walls of grasses (monocotyledonous). Xylans are polysaccharides made up of β-1,4-linked xylose (a pentose sugar) residues with side branches of α-arabinofuranose and α-glucuronic acids and contribute to cross-linking of cellulose microfibrils and lignin through ferulic acid residues. On the basis of the substituting groups, xylan can be categorized into three classes i) glucuronoxylan (GX) ii) neutral arabinoxylan (AX) and iii) glucuronoarabinoxylan (GAX). The quality of cereal flours and the hardness of dough are largely affected by the amount of xylan. Xylan is one of the foremost anti-nutritional factors in commonly used feedstuff raw materials. It is a major component of plant secondary cell walls which is a major source of renewable energy especially for second generation biofuels. However, since microorganisms like yeast cannot ferment pentoses naturally, xylose (the pentose backbone of xylan) results hard to ferment in biofuel production, reducing its use in renewable energy production (PMID: 18299887, PMID: 31077637). 1,3-Xylan 2',3'-Cyclic AMP adenosine 2'3'-cyclic monophosphate Rosin, wood Wood rosin C5H10O6 166.129 166.047738042 (2R,3R,5S,6S)-oxane-2,3,4,5,6-pentol (2R,3R,5S,6S)-oxane-2,3,4,5,6-pentol 9014-63-5 [H][C@]1(O)O[C@@]([H])(O)[C@]([H])(O)C([H])(O)[C@]1([H])O InChI=1S/C5H10O6/c6-1-2(7)4(9)11-5(10)3(1)8/h1-10H/t1?,2-,3+,4-,5+ HEHIOFQJTRFOKM-ASQQECOQSA-N belongs to the class of organic compounds known as monosaccharides. Monosaccharides are compounds containing one carbohydrate unit not glycosidically linked to another such unit, and no set of two or more glycosidically linked carbohydrate units. Monosaccharides have the general formula CnH2nOn. Monosaccharides Organic compounds Organic oxygen compounds Organooxygen compounds Carbohydrates and carbohydrate conjugates Aliphatic heteromonocyclic compounds Hemiacetals Hydrocarbon derivatives Oxacyclic compounds Oxanes Polyols Secondary alcohols Alcohol Aliphatic heteromonocyclic compound Hemiacetal Hydrocarbon derivative Monosaccharide Organoheterocyclic compound Oxacycle Oxane Polyol Secondary alcohol logp -2.80 ALOGPS logs 0.58 ALOGPS solubility 6.25e+02 g/l ALOGPS logp -2.7 ChemAxon pka_strongest_acidic 10.96 ChemAxon pka_strongest_basic -3.7 ChemAxon iupac (2R,3R,5S,6S)-oxane-2,3,4,5,6-pentol ChemAxon average_mass 166.129 ChemAxon mono_mass 166.047738042 ChemAxon smiles [H][C@]1(O)O[C@@]([H])(O)[C@]([H])(O)C([H])(O)[C@]1([H])O ChemAxon formula C5H10O6 ChemAxon inchi InChI=1S/C5H10O6/c6-1-2(7)4(9)11-5(10)3(1)8/h1-10H/t1?,2-,3+,4-,5+ ChemAxon inchikey HEHIOFQJTRFOKM-ASQQECOQSA-N ChemAxon polar_surface_area 110.38 ChemAxon refractivity 30.99 ChemAxon polarizability 14.4 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 6 ChemAxon donor_count 5 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 77400 Specdb::MsMs 77401 Specdb::MsMs 77402 Specdb::MsMs 137523 Specdb::MsMs 137524 Specdb::MsMs 137525 Specdb::MsMs 3597178 Specdb::MsMs 3597179 Specdb::MsMs 3597180 Specdb::MsMs 3597181 Specdb::MsMs 3597182 Specdb::MsMs 3597183 37166 Arabica coffee Type 1 specific Coffea arabica 13443 Common hazelnut Type 1 specific Corylus avellana 13451 Sweet orange Type 1 specific Citrus sinensis 2711