Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (4): 741-750.DOI: 10.1016/S1872-2067(11)60519-6

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Immobilization of glucose oxidase in liposome-templated biomimetic silica particles

ZHU Yanana, JIANG Yanjuna,b, GAO Jinga, ZHOU Liyaa, HE Yinga, JIA Feia   

  1. a Institute of Chemical Technology, Hebei University of Technology, Tianjin 300130, China;
    b State Key Laboratory of Biology Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2012-10-30 Revised:2012-12-24 Online:2013-04-23 Published:2013-04-24
  • Supported by:

    This work was supported by the National Nature Science Foundation of China (21006020, 21276060, 21276062), the Natural Science Foundation of Hebei Province (B2010000035, B2011202095), the Science and Technology Research Key Project of Higher School in Hebei Province (ZD2010118) and the Application Basic Research Plan Key Basic Research Project of Hebei Province (11965150D), and the Open Funding Project of the National Key Laboratory of Biochemical Engineering (China).

Abstract:

Glucose oxidase (GOx) was immobilized in biomimetic silica particles by coupling liposome vesicles with a biomimetic silicification process simulating a cell microenvironment. SEM images showed that the immobilized GOx particles were spherical, and their diameter was approximately 200 nm. The recovery of GOx reached 71.8% under the optimized reaction conditions. The immobilized GOx showed improved thermal and pH stability, and its tolerance to denaturants and reusability were also greatly improved. This was attributed to the space limitations and stable environment in the support.

Key words: Biomimetic silicification, Liposome, Glucose oxidase, Immobilized enzyme