title: Simultaneous Bioconversion of Xylose and Glycerol to Xylonic Acid and 1,3-Dihydroxyacetone from the Mixture of Pre-Hydrolysates and Ethanol-Fermented Waste Liquid by Gluconobacter oxydans.
abstract: Simultaneous bioconversion of xylose and glycerol to xylonic acid and 1,3-dihydroxyacetone (DHA) was realized by using Gluconobacter oxydans (G. oxydans). Currently, the enzymatic hydrolysate to ethanol-fermented waste liquid and the inorganic acid pre-hydrolysate that contain abundant glycerol and xylose were difficult to be utilized or disposed. Based on the method of compressed oxygen supply-sealed and stirred tank reactor system (COS-SSTR), the xylonic acid and 1,3-dihydroxyacetone could be co-produced rapidly with the mixture of the dilute sulfuric acid pre-hydrolysate and ethanol-fermented waste liquid of enzymatic hydrolysate (MPEW) as material. By means of the system, we finally produced 102.3 ± 3.2 g/L xylonic acid and 40.6 ± 1.8 g/L 1,3-dihydroxyacetone at yield of 92.4 ± 2.8 % and 80.6 ± 3.5 % directly and simultaneously from the mixed solution. The central features of this bioprocess application would enable cost-competitive bacterial xylonic acid and 1,3-dihydroxyacetone production from lignocellulosic materials.
authors.affiliation: College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.|Jiangsu Province Key Laboratory of Green Biomass Based Fuel Chemical of, Nanjing, 210037, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhou
authors.affiliation: College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. xuyong@njfu.edu.cn.|Jiangsu Province Key Laboratory of Green Biomass Based Fuel Chemical of, Nanjing, 210037, People's Republic of China. xuyong@njfu.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
authors.affiliation: College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.|Jiangsu Province Key Laboratory of Green Biomass Based Fuel Chemical of, Nanjing, 210037, People's Republic of China.
authors.forename: Shiyuan
authors.initials: S
authors.lastname: Yu
mesh_terms: D004098:Dihydroxyacetone / Q000378:metabolism*; D005285:Fermentation; D020600:Gluconobacter oxydans / Q000378:metabolism*; D005990:Glycerol / Q000378:metabolism*; D006868:Hydrolysis; D007700:Kinetics; D014994:Xylose / Q000378:metabolism*
chemical_list: D014994:Xylose; D004098:Dihydroxyacetone; D005990:Glycerol
keywords: 1,3-Dihydroxyacetone (DHA); Compressed oxygen supply; Gluconobacter oxydans; Glycerol; Xylonic acid (XA); Xylose