• ISSN 16748301
  • CN 32-1810/R
Volume 32 Issue 5
May  2018
Article Contents

Citation:

Antifungal effects of BiOBr nanosheets carrying surfactant cetyltrimethylammonium bromide

  • Received Date: 2018-04-28
    Accepted Date: 2018-06-30

    Fund Project: This work is supported by Tianjin 131 Innovative Talent Training Project and Postdoctoral Science Foundation.

  • BiOBr nanosheets are important photocatalytic nanomaterials. However, their biological effects remain to be explored. In this study, we investigated the antifungal effect of BiOBr nanosheets on Candida albicans. Strikingly, the nanosheets strongly inhibited the growth of C. albicans [IC50=(964.7) mg/L], hyphal development and biofilm formation. Compareed to the antifungal effect of the cationic surfactant cetyltrimethylammonium bromide, the inhibitory effect of the nanosheets on fungal pathogen was attributed to cetyltrimethylammonium bromide adsorbed by the nanosheets. Thermal gravity analysis and cetyltrimethylammonium bromide release experiment indicated that only 0.42% cetyltrimethylammonium bromide on BiOBr nanosheets was released. Taken together, this study uncovers the contribution of surfactant released from the nanosheets to their antifungal activity
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Antifungal effects of BiOBr nanosheets carrying surfactant cetyltrimethylammonium bromide

  • 1. Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • 2. Wuqing District Center for Disease Control and Prevention, Tianjin 301700, China
  • 3. Ministry of Education Key Laboratory of Molecular Microbiology and Technology, College of Life Science, Nankai University, Tianjin 300071, China
  • 4. Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300071, China.
Fund Project:  This work is supported by Tianjin 131 Innovative Talent Training Project and Postdoctoral Science Foundation.

Abstract: BiOBr nanosheets are important photocatalytic nanomaterials. However, their biological effects remain to be explored. In this study, we investigated the antifungal effect of BiOBr nanosheets on Candida albicans. Strikingly, the nanosheets strongly inhibited the growth of C. albicans [IC50=(964.7) mg/L], hyphal development and biofilm formation. Compareed to the antifungal effect of the cationic surfactant cetyltrimethylammonium bromide, the inhibitory effect of the nanosheets on fungal pathogen was attributed to cetyltrimethylammonium bromide adsorbed by the nanosheets. Thermal gravity analysis and cetyltrimethylammonium bromide release experiment indicated that only 0.42% cetyltrimethylammonium bromide on BiOBr nanosheets was released. Taken together, this study uncovers the contribution of surfactant released from the nanosheets to their antifungal activity

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