Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (6): 700-704.DOI: 10.11944/j.issn.1000-0518.2017.06.160370

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Antibacterial Activities of Six Kinds of Polyoxometalates

XIE Lefanga,XING Ruia,WANG Fangb,WANG Lia*()   

  1. aCollege of Food and Biological Engineering,Jimei University,Xiamen,Fujian 361021,China
    bCollege of Oceanology and Food Science,Quanzhou Normal University,Quanzhou,Fujian 361000,China
  • Received:2016-09-18 Accepted:2016-12-05 Published:2017-05-31 Online:2017-05-31
  • Contact: WANG Li
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.2137107, No.20871054)

Abstract:

In this study, we synthesised five kinds of Keggin-type transition metal substituted polyoxometalates(Na7PMo11M(Ⅱ)O40(M=Mn,Fe,Zn,Co,Ni), abbreviated as PMo11M(Ⅱ)(M=Mn,Fe,Zn,Co,Ni)). The structures of these compounds were characterized by UV-visible absorption spectrum and Fourier transform infrared spectrometer(FTIR). And then the antibacterial activities of the five kinds of Keggin-type transition metal substituted polyoxometalates(PMo11M(Ⅱ)(M=Mn,Fe,Zn,Co,Ni) and their parent H3PMo12O40(abbreviated PMo12) on Sarcina lutea(S.lutea), Staphylococcus aureus(S.aureus), Bacillus subtilis(B.subtilis) and Escherichia coli(E.coli) were investigated by Oxford plate. Also, the minimum inhibitory concentration(MIC) and the minimum bactericidal concentration(MBC) were tested by broth microdilution methods. The results show that the six kinds of polyoxometalates can inhibit the proliferation of these four different kinds of bacteria to different extents, and the antimicrobial activities of all compounds on S.lutea and S.aureus are more effective than those against B.Subtilis and E.coli. Among these compounds, the antibacterial activities of (PMo11M(Ⅱ)(M=Ni,Mn,Zn)) were superior to the other three compounds. This study will provide more theoretical and experimental supports for polyoxometalates as preservative agents in fruit and vegetables.

Key words: polyoxometalates, antibacterial activities, oxford plate