Cuprous Oxide Nanoparticles Decorated Fabric Materials with Anti-biofilm Properties

Akanksha Gupta, Moorthy Maruthapandi, Poushali Das, Arumugam Saravanan, Gila Jacobi, Michal Natan, Ehud Banin, John H.T. Luong, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Considering the global spread of bacterial infections, the development of anti-biofilm surfaces with high antimicrobial activities is highly desired. This work unraveled a simple, sonochemical method for coating Cu2O nanoparticles (NPs) on three different flexible substrates: polyester (PE), nylon 2 (N2), and polyethylene (PEL). The introduction of Cu2O NPs on these substrates enhanced their surface hydrophobicity, induced ROS generation, and completely inhibited the growth of sensitive (Escherichia coli and Staphyloccocus aureus) and drug-resistant (MDR E. coli and MRSA) planktonic and biofilm. The experimental results confirmed that Cu2O-PE exhibited complete biofilm mass reduction ability for all four strains, whereas Cu2O-N2 showed more than 99% biomass inhibition against both drug-resistant and sensitive pathogens in 6 h. Moreover, Cu2O-PEL also indicated a 99.95, 97.73, 98.00, and 99.20% biomass reduction of MRSA, MDR E. coli, E. coli, and S. aureus, respectively. All substrates were investigated for time-dependent inhibitions, and the associated biofilm mass and log reduction were evaluated. The mechanisms of Cu2O NP action against the mature biofilms include the generation of reactive oxygen species (ROS) as well as electrostatic interaction between Cu2O NPs and bacterial membranes. The current study could pave the way for the commercialization of sonochemically coated Cu2O NP flexible substrates for the prevention of microbial contamination in hospitals and industrial environments.

Original languageEnglish
JournalACS Applied Bio Materials
Early online date11 Aug 2022
DOIs
StateE-pub ahead of print - 11 Aug 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society.

Keywords

  • CuO nanoparticles
  • antibacterial
  • biofilm inhibition
  • cytotoxicity
  • reactive oxygen species (ROS)
  • sonochemical coating

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