首页> 美国卫生研究院文献>Scientific Reports >Combination of deep eutectic solvent and ionic liquid to improve biocatalytic reduction of 2-octanone with Acetobacter pasteurianus GIM1.158 cell
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Combination of deep eutectic solvent and ionic liquid to improve biocatalytic reduction of 2-octanone with Acetobacter pasteurianus GIM1.158 cell

机译:深共熔溶剂和离子液体的组合以改善巴氏杆菌GIM1.158细胞对2-辛酮的生物催化还原

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摘要

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.
机译:巴氏醋杆菌GIM1.158细胞对2-辛酮的有效抗Prelog不对称还原在由深共晶溶剂(DES)和与水不混溶的离子液体(IL)组成的双相系统中成功进行。各种DES对(R)-2-辛醇的合成产生不同的影响。氯化胆碱/乙二醇(ChCl / EG)具有良好的生物相容性,可适度增加细胞膜的通透性,从而获得更好的结果。添加ChCl / EG将最佳底物浓度从40μmM增加到60μmM,产物e.e.保持在99.9%以上。为了进一步提高反应效率,将不与水混溶的ILs引入反应体系,并观察到C4MIM·PF6的底物浓度增加(1.5μM)。另外,细胞在反应系统中表现出良好的操作稳定性。因此,使用ChCl / EG和C4MIM·PF6的有效生物催化方法有望有效合成(R)-2-辛醇。

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