title: The integrated production of microbial lipids and bio-SiO2 from rice husks by an organic electrolytes pretreatment technology.
abstract: In this study, a full dissolution behavior of rice husks (RHs) in ionic liquids-based organic electrolytes was achieved, and physicochemical effect of the dissolution pretreatment on the structures of RHs was elucidated. The physicochemical changes led to an enhanced subsequent enzymatic saccharification of RHs, and a total reducing sugars (TRSs) yield of 0.70gg(-1), and a glucose yield of 0.43gg(-1) were obtained. The hydrolysates could be used as carbon sources for the cultivation of Rhodosporidium toruloides Y4 for the production of microbial lipids with a satisfactory productivity of cell biomass (13.3gL(-1)) and lipid content (32.5%) after 100h cultivation. Further pyrolysis of the residuals after the enzymatic hydrolysis at 600°C for 3h resulted in new uniform, spherical silica powder materials with particle size around 150nm, and surface area of 179.3m(2)g(-1).
authors.affiliation: School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; Bioenergy Research Division, Dalian National Laboratory for Clean Energy, 457#, Zhongshan Rd., Dalian 116023, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Yu
authors.affiliation: School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Tian
authors.affiliation: Bioenergy Research Division, Dalian National Laboratory for Clean Energy, 457#, Zhongshan Rd., Dalian 116023, China; Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457#, Zhongshan Rd., Dalian 116023, China. Electronic address: hbxie@dicp.ac.cn.
authors.forename: Haibo
authors.initials: H
authors.lastname: Xie
authors.affiliation: Bioenergy Research Division, Dalian National Laboratory for Clean Energy, 457#, Zhongshan Rd., Dalian 116023, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Shen
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457#, Zhongshan Rd., Dalian 116023, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001709:Biotechnology / Q000379:methods*; D004573:Electrolytes / Q000494:pharmacology*; D043364:Endo-1,4-beta Xylanases / Q000378:metabolism; D005285:Fermentation / Q000187:drug effects; D006868:Hydrolysis / Q000187:drug effects; D007093:Imidazoles / Q000494:pharmacology; D008055:Lipids / Q000096:biosynthesis*; D009930:Organic Chemicals / Q000494:pharmacology*; D012275:Oryza / Q000737:chemistry* / Q000187:drug effects; D011760:Pyrrolidinones / Q000494:pharmacology; D012822:Silicon Dioxide / Q000378:metabolism*; D013696:Temperature; D014866:Waste Products; D001617:beta-Glucosidase / Q000378:metabolism
chemical_list: D004573:Electrolytes; D007093:Imidazoles; D008055:Lipids; D009930:Organic Chemicals; D011760:Pyrrolidinones; D014866:Waste Products; D012822:Silicon Dioxide; D001617:beta-Glucosidase; D043364:Endo-1,4-beta Xylanases; C038678:N-methylpyrrolidone; C518739:1-ethyl-3-methylimidazolium
keywords: Biomass; Biorefinery; Ionic liquids; Microbial lipids; Rice husks; SiO(2)