title: Combination of deep eutectic solvent and ionic liquid to improve biocatalytic reduction of 2-octanone with Acetobacter pasteurianus GIM1.158 cell.
abstract: The efficient anti-Prelog asymmetric reduction of 2-octanone with Acetobacter pasteurianus GIM1.158 cells was successfully performed in a biphasic system consisting of deep eutectic solvent (DES) and water-immiscible ionic liquid (IL). Various DESs exerted different effects on the synthesis of (R)-2-octanol. Choline chloride/ethylene glycol (ChCl/EG) exhibited good biocompatibility and could moderately increase the cell membrane permeability thus leading to the better results. Adding ChCl/EG increased the optimal substrate concentration from 40 mM to 60 mM and the product e.e. kept above 99.9%. To further improve the reaction efficiency, water-immiscible ILs were introduced to the reaction system and an enhanced substrate concentration (1.5 M) was observed with C4MIM·PF6. Additionally, the cells manifested good operational stability in the reaction system. Thus, the efficient biocatalytic process with ChCl/EG and C4MIM·PF6 was promising for efficient synthesis of (R)-2-octanol.
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.|Laboratory of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Pei
authors.initials: P
authors.lastname: Xu
authors.affiliation: Laboratory of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Peng-Xuan
authors.initials: PX
authors.lastname: Du
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Min-Hua
authors.initials: MH
authors.lastname: Zong
authors.affiliation: Laboratory of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Li
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.|Laboratory of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Wen-Yong
authors.initials: WY
authors.lastname: Lou
mesh_terms: D000091:Acetobacter / Q000187:drug effects / Q000378:metabolism*; D002462:Cell Membrane / Q000187:drug effects / Q000502:physiology; D002794:Choline; D019855:Ethylene Glycol; D052578:Ionic Liquids; D007659:Ketones / Q000378:metabolism*; D000442:Octanols / Q000378:metabolism; D010084:Oxidation-Reduction; D010539:Permeability / Q000187:drug effects; D012997:Solvents
chemical_list: D052578:Ionic Liquids; D007659:Ketones; D000442:Octanols; D012997:Solvents; C067943:2-octanol; D019855:Ethylene Glycol; C037075:2-octanone; D002794:Choline