华南理工大学学报(自然科学版) ›› 2019, Vol. 47 ›› Issue (11): 62-70.doi: 10.12141/j.issn.1000-565X.190101

• 生物学 • 上一篇    下一篇

含 DESs 体系中固定化 Kurthia gibsonii SC0312 细胞催化 1-苯基-1,2-乙二醇不对称氧化反应

娄文勇 赵莹 彭飞
  

  1. 华南理工大学 食品科学与工程学院,广东 广州 510640
  • 收稿日期:2019-03-19 修回日期:2019-04-10 出版日期:2019-11-25 发布日期:2019-10-02
  • 通信作者: 娄文勇(1975-),男,教授,博士生导师,主要从事生物催化研究. E-mail:wylou@scut.edu.cn
  • 作者简介:娄文勇(1975-),男,教授,博士生导师,主要从事生物催化研究.
  • 基金资助:
    国家自然科学基金资助项目( 21676104,21878105)

Asymmetric Oxidation of Racemic 1-Phenyl-1,2-Ethanediol Using Immobilized Kurthia gibsonii SC0312 Cells in DESs-Containing System

LOU Wenyong ZHAO Ying PENG Fei   

  1. School of Food Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2019-03-19 Revised:2019-04-10 Online:2019-11-25 Published:2019-10-02
  • Contact: 娄文勇(1975-),男,教授,博士生导师,主要从事生物催化研究. E-mail:wylou@scut.edu.cn
  • About author:娄文勇(1975-),男,教授,博士生导师,主要从事生物催化研究.
  • Supported by:
    Supported by the National Natural Science Foundation of China( 21676104,21878105)

摘要: 在含深度共熔溶剂的非水相体系中,利用固定化Kurthia gibsonii SC0312细胞高效催化外消旋1-苯基-1,2-乙二醇(PED)不对称氧化以制备对映体纯的(S)-PED.在所考察的4种离子液体和2种深度共熔溶剂中,氯化胆碱/尿素([ChCl][U])对Kurthia gibsonii SC0312细胞表现出良好的生物相容性,能适当改变细胞膜的完整性,有效提高反应的催化效率.在[ChCl][U]体积分数为4%、缓冲液p H值为7. 5、反应温度为35℃、细胞质量浓度为60mg/m L、底物浓度为100mmol/L的条件下,反应初速度为8. 25mmol/(L·h),反应仅7 h产率及(S)-PED e. e.值即分别达49. 6%和99. 9%.

关键词: Kurthia gibsonii SC0312 细胞, 1-苯基-1, 2-乙二醇, 不对称氧化, 氯化胆碱/尿素

Abstract: Highly efficient asymmetric oxidation of racemic 1-phenyl-1,2-ethanediol ( PED) was successfully con- ducted to prepare enantiomerically pure ( S) -PED with immobilized Kurthia gibsonii SC0312 cells in non-aqueous system containing DESs. Among the 4 kind of tested ionic liquids and 2 kind of deep eutectic solvents,[ChCl][U] manifested better biocompatibility with Kurthia gibsonii SC0312 cells,and it can appropriately change the cell membrane integrity,thereby effectively improve the catalytic efficiency of this reaction. When [ChCl][U]content is 4% ( volume fraction) ,buffer pH is 7. 5,reaction temperature is 35 ℃,cell concentration is 60 mg /mL,and substrate concentration is 100 mmol /L,the initial reaction rate reaches 8. 25 mmol /( L·h) ,and after 7 hours' re- action,the yield rate and ( S) -PED e. e. value reach 49. 6% and 99. 9% ,respectively.

Key words: Kurthia gibsonii SC0312 cells, 1-phenyl-1, 2-ethanediol, asymmetric oxidation, [ChCl][U]

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