Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (10): 1870.doi: 10.7503/cjcu20160201

• Physical Chemistry • Previous Articles     Next Articles

Effect of the Ionic Liquids with Anion Tf2N- on the Whole Cell Catalytic Properties of Penicillium Purpurogenum Li-3 Strain

Zhang Xin1, LI Yang1, CAO Hong2,*(), Ouyang Qiaofeng1,2, Zheng Lanlan1,4, LI Chun3   

  1. 1.College of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
    2.College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
    3.School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    4. College of Chemistry and Environmental Science, Kashi University, Kashi 844006, China
  • Received:2016-03-31 Online:2016-10-10 Published:2016-09-23
  • Contact: CAO Hong E-mail:chyf_ch@126.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21146012, 21266029)

Abstract:

Penicillium purpurogenum Li-3 cells properties of growth, metabolism, permeability of cell membrane and catalysis were studied in five ionic liquids composed with anion Tf2N- and five different ca-tions. The results showed that, the ionic liquids [Py14]Tf2N, [Bmim]Tf2N, [BPy]Tf2N and [P6,4,4,4]Tf2N had inhibitory effect on the growth of penicillium purpurogenum Li-3 while ionic liquid [N1,4,4,4]Tf2N had a promoting effect. Through metabolic activity determination of retention value(R) in ionic liquids, [P6,4,4,4]Tf2N and [N1,4,4,4]Tf2N showed relatively high biocompatibility to cells. At the same time, five ionic liquids on cell membrane permeability were improved effect. Whole-cell catalysis results displayed that [Py14]Tf2N was optimal ionic liquid. When the addition of [Py14]Tf2N was 25%, after 84 h, glycyrrhetinic acid monoglucuronide(GAMG) rate and glycyrrhizin acid(GL) conversion rate were as high as 95.38% and 99.84%. Therefore, the addition of [Py14]Tf2N, greatly promoted the formation of conversion and product. It showed that the effects of five kinds of ionic liquids on cells properties of growth and metabolism, cell membrane permeability and the whole cell catalytic activity were not only related to the anion Tf2N-, but also played an important role in the composition, structure and properties of the cations.

Key words: Tf2N-, Cation, Ionic liquid, Penicillium purpurogenum Li-3, Glycyrrhetinic acid monoglucuronide

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