Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (3): 803.doi: 10.7503/cjcu20200635

• Physical Chemistry • Previous Articles     Next Articles

Construction of Fe-aminoclay-glucose Oxidase Nanocomposite Catalyst and Its Multi-enzyme Cascade Analysis

LI Liu1, SUN Shiyong1(), LYU Rui1, GOLUBEV Yevgeny Aleksandrovich2, WANG Ke1, DONG Faqin1, DUAN Tao3, KOTOVA Olga Borisovna2, KOTOVA Elena Leonidovna4   

  1. 1.School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621000,China
    2.Yushkin’s Instiute of Geology,Komi Science Center,Ural Branch of RAS,Syktyvkar 167982,Russia
    3.School of National Defence Science & Technology,Southwest University of Science and Technology,Mianyang 621000,China
    4.St. Petersburg Mining State University,St. Petersburg 199106,Russia
  • Received:2020-08-31 Online:2021-03-10 Published:2021-03-08
  • Contact: SUN Shiyong E-mail:shysun@swust.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(42011530085);the Russian Foundation for Basic Research(20?55?53019);the Youth Science and Technology Foundation of Sichuan Province, China(2019JDJQ0056)

Abstract:

Glucose oxidase(GOx) and Fe-aminoclay(FeAC) were combined to construct a mimic multi- enzyme system(FeAC-GOx) for cascade reaction. FeAC exhibit peroxidase-like activity which can catalyze H2O2 generated by GOx and trigger color reaction. The obtained FeAC-GOx was characterized by scanning electron microscope(SEM), X-ray diffraction(XRD), and fourier transform infrared spectroscopy(FTIR). The enzymatic kinetics, catalytic stability and reusability were evaluated. As a result, the immobilization efficiency of GOx could reach to 76.4%, and FeAC-GOx exhibited excellent cascade catalysis activity. Compared with the free enzyme, FeAC not only possessed a strong tolerance toward temperature and pH, but also presented excellent reusability. The catalytic activity of reused FeAC barely changed after six repetitions. This strategy may lay the foundation to the development of a new glucose biosensor, and provide a novel approach to design multi-enzyme cascade system.

Key words: Fe-aminoclay, Glucose oxidase, Immobilized enzyme, Cascade reaction

CLC Number: 

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