Superparamagnetic Iron Oxide Nanoparticles and Essential Oils: A New Tool for Biological Applications

This review aims to provide an overview on the current knowledge about the use of superparamagnetic iron oxide nanoparticles and essential oils on the prevention of microbial adherence and consequent biofilm formation with the goal of being applied on the surface of medical devices

Maria Graça Miguel

2020

Scholarcy highlights

  • Infections caused by microorganisms are a concern for human health
  • In what concerns the synthesis of magnetite nanoparticles, this approach has several advantages such as the low temperature of operation, usually 20–70 ◦C; the reaction time, which typically is in the range of minutes to just a few hours; the good control of the shape and size of the particles; and a narrow size distribution
  • The essential oils obtained from Syzygium aromaticum or Cinnamomum sp. were used for producing magnetite particles by the sol–gel method combined with autoignition
  • Diverse methods have been developed for producing magnetite nanoparticles with adequate size, shape, size distribution, surface, and magnetic properties
  • Essential oils have been used for the production of magnetite nanoparticles by the sol–gel method combined with autoignition, for modifying the surface magnetite nanoparticles for improving their stabilization and, to prevent the microbial growth
  • There was a limitation of the majority of the studies, which was the use of a sole approach on the evaluation of the formation of biofilm that was mainly comprised by the determination of the microbial cells viability, and other aspects, such as the inhibition of exopolyssacharide production, inhibition of the cell–cell communication, and virulence potential were not covered
  • It is important that future studies include the exploitation of these aspects in order to have a more complete picture about the impact of the nanobiosystems on the associated physiological and virulence potential linked with biofilm

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