期刊
MICROMACHINES
卷 13, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/mi13122170
关键词
additive laser-induced forward transfer; antibacterial nanoparticles; food bacterial films; bactericidal effect
类别
资金
- Ministry of Science and Higher Education of the Russian Federation
- [075-15-2020-775]
Additive laser-induced forward transfer (LIFT) is an efficient method for transferring metal bactericidal nanoparticles onto food bacterial biofilms, demonstrating significant antibacterial effects against pathogenic microorganisms.
Additive laser-induced forward transfer (LIFT) of metal bactericidal nanoparticles from a polymer substrate directly onto food bacterial biofilms has demonstrated its unprecedented efficiency in combating pathogenic microorganisms. Here, a comprehensive study of laser fluence, metal (gold, silver and copper) film thickness, and the transfer distance effects on the antibacterial activity regarding biofilms of Gram-negative and Gram-positive food bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Listeria monocytogenes, Salmonella spp.) indicated the optimal operation regimes of the versatile modality. LIFT-induced nanoparticle penetration into a biofilm was studied by energy-dispersion X-ray spectroscopy, which demonstrated that nanoparticles remained predominantly on the surface of the biofilm.
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