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Issue 70, 2018

Biocompatibility and photo-induced antibacterial activity of lignin-stabilized noble metal nanoparticles

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Abstract

One-pot thermal and photochemical syntheses of lignin-doped silver and gold nanoparticles were developed and their antimicrobial properties were studied against Escherichia coli and Staphylococcus aureus. The nature of the lignin as well as the metal are directly involved in the antimicrobial activity observed in these nanocomposites. Whereas one of the nanocomposites is innocuous under dark conditions and shows photoinduced activity only against Staphylococcus aureus, the rest of the lignin-coated silver nanoparticles studied show antimicrobial activity under dark and light conditions for both bacteria strains. Additionally, only photoinduced activity is observed for lignin-coated gold nanoparticles. Importantly, the particles are non-cytotoxic towards human cells at the bactericidal concentrations. Preliminary assays show these silver nanoparticles as potential antimicrobial agents towards S. aureus biofilm eradication.

Graphical abstract: Biocompatibility and photo-induced antibacterial activity of lignin-stabilized noble metal nanoparticles

Supplementary files

Article information


Submitted
02 Oct 2018
Accepted
25 Nov 2018
First published
04 Dec 2018

This article is Open Access

RSC Adv., 2018,8, 40454-40463
Article type
Paper

Biocompatibility and photo-induced antibacterial activity of lignin-stabilized noble metal nanoparticles

D. M. Rocca, J. P. Vanegas, K. Fournier, M. C. Becerra, J. C. Scaiano and A. E. Lanterna, RSC Adv., 2018, 8, 40454 DOI: 10.1039/C8RA08169G

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