Login (DCU Staff Only)
Login (DCU Staff Only)

DORAS | DCU Research Repository

Explore open access research and scholarly works from DCU

Advanced Search

Production of silver nano-inks and surface coatings for anti-microbial food packaging and Its ecological impact

Manikandan, N. Arul, McCann, Ronán orcid logoORCID: 0000-0002-2071-0785, Dimitrios, Kakavas, Rochfort, Keith D. orcid logoORCID: 0000-0003-1198-5952, Sreenilayam, Sithara orcid logoORCID: 0000-0002-5282-3645, Alkan, Godze, Stornetta, Tom, McGivern, Allan Robert, Grintzalis, Konstantinos orcid logoORCID: 0000-0002-6276-495X, Friedrich, Bernd orcid logoORCID: 0000-0002-2934-2034, Foley, Greg orcid logoORCID: 0000-0002-2284-4218, Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 and Freeland, Brian orcid logoORCID: 0000-0003-3705-5745 (2023) Production of silver nano-inks and surface coatings for anti-microbial food packaging and Its ecological impact. International Journal of Molecular Sciences, 24 . ISSN 1422-0067

Food spoilage is an ongoing global issue that contributes to rising carbon dioxide emissions and increased demand for food processing. This work developed anti-bacterial coatings utilising inkjet printing of silver nano-inks onto food-grade polymer packaging, with the potential to enhance food safety and reduce food spoilage. Silver nano-inks were synthesised via laser ablation synthesis in solution (LaSiS) and ultrasound pyrolysis (USP). The silver nanoparticles (AgNPs) produced using LaSiS and USP were characterised using transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, UV-Vis spectrophotometry and dynamic light scattering (DLS) analysis. The laser ablation technique, operated under recirculation mode, produced nanoparticles with a small size distribution with an average diameter ranging from 7–30 nm. Silver nano-ink was synthesised by blending isopropanol with nanoparticles dispersed in deionised water. The silver nano-inks were printed on plasma-cleaned cyclo-olefin polymer. Irrespective of the production methods, all silver nanoparticles exhibited strong antibacterial activity against E. coli with a zone of inhibition exceeding 6 mm. Furthermore, silver nano-inks printed cyclo-olefin polymer reduced the bacterial cell population from 1235 (±45) × 106 cell/mL to 960 (±110) × 106 cell/mL. The bactericidal performance of silver-coated polymer was comparable to that of the penicillin-coated polymer, wherein a reduction in bacterial population from 1235 (±45) × 106 cell/mL to 830 (±70) × 106 cell/mL was observed. Finally, the ecotoxicity of the silver nano-ink printed cyclo-olefin polymer was tested with daphniids, a species of water flea, to simulate the release of coated packaging into a freshwater environment.
Item Type:Article (Published)
Additional Information:Article number: 5341
Uncontrolled Keywords:antibacterial; food packaging; laser ablation; silver nanoparticles; ultrasound pyrolysis
Subjects:Biological Sciences > Biotechnology
Biological Sciences > Microbiology
Engineering > Materials
Physical Sciences > Lasers
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
DCU Faculties and Schools > Faculty of Science and Health > School of Biotechnology
DCU Faculties and Schools > Faculty of Science and Health > School of Nursing, Psychotherapy & Community Health
Research Institutes and Centres > Advanced Processing Technology Research Centre (APTRC)
Research Institutes and Centres > I-Form
Official URL:https://doi.org/10.3390/ijms24065341
Copyright Information:© 2023 Authors.
Funders:Science foundation Ireland (20/FIP/PL/8940P, 18/SIRG/5563), Irish Research Council (GOIPG/2022/314 )
ID Code:28157
Deposited On:13 Mar 2023 12:38 by Brian Freeland . Last Modified 21 Dec 2023 15:03

Full text available as:

[thumbnail of ijms-24-05341.pdf]
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Creative Commons: Attribution 4.0


Downloads per month over past year

Archive Staff Only: edit this record