title: The role of deoxyhexonic acids in the hydrothermal decarboxylation of carbohydrates.
abstract: Hydrothermolysis of D-glucose, cellobiose, and beta-cyclodextrin leads to the formation of small amounts of 3-deoxyhexonic acids. These acids are known to be produced by the alkaline degradation of carbohydrates. The formation under neutral hydrothermal conditions of the 3-deoxyhexonic acids provides evidence for the formation of 3-deoxy-D-erythro-hex-2-ulose, a compound that has been reported to play a role in both alkaline and acidic conversion of carbohydrates. Hydrothermolysis of 2- and 3-deoxy-D-arabino-hexonic acid does not lead to significant decarboxylation, and therefore these compounds cannot be considered to play a major role in the initial hydrothermal decarboxylation of biomass.
mesh_terms: D018533:Biomass; D002236:Carbohydrate Conformation; D050260:Carbohydrate Metabolism; D002240:Carbohydrate Sequence; D002475:Cellobiose / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D003505:Cyclodextrins / Q000378:metabolism; D003653:Decarboxylation; D005936:Glucans / Q000378:metabolism; D005942:Gluconates / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D007661:Ketoses / Q000378:metabolism; D008969:Molecular Sequence Data; D013400:Sugar Acids / Q000378:metabolism*; D013696:Temperature; D047392:beta-Cyclodextrins
chemical_list: D003505:Cyclodextrins; D005936:Glucans; D005942:Gluconates; D007661:Ketoses; D013400:Sugar Acids; D047392:beta-Cyclodextrins; D002475:Cellobiose; C097033:3-deoxy-arabino-hexonic acid; C045553:2-deoxygluconic acid; C031146:maltoheptaose; C068286:3-deoxyhexulose; D005947:Glucose; C031215:betadex