Long-term wear effects on nanosilver release from commercially available food contact materials

Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that result in significant changes to the surface o...

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Bibliographic Details
Published in:Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment Chemistry, analysis, control, exposure & risk assessment, 2019-11, Vol.36 (11), p.1757-1768
Main Authors: Addo Ntim, Susana, Goodwin, David G., Sung, Lipiin, Thomas, Treye A., Noonan, Gregory O.
Format: Article
Language:English
Subjects:
Abrasion
Acetic Acid
Anti-Infective Agents - analysis
Anti-Infective Agents - toxicity
Confocal microscopy
Contact potentials
Evaluation
Food
Food availability
food contact materials
Food Contamination - analysis
Food Packaging
Food Safety
food simulants
Humans
ICP/MS
Low concentrations
Metal Nanoparticles - analysis
Metal Nanoparticles - toxicity
Metals analysis
Microscopy, Confocal
Nanocomposites - analysis
Nanocomposites - toxicity
Nanoparticles
Organic chemistry
Particle Size
Scraping
Silver
Silver - analysis
Silver - toxicity
Surface Properties
Water
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Summary:Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that result in significant changes to the surface of FCMs have not been investigated for NP migration into food. Therefore, a quantitative assessment of nanoparticle release from commercially available nanosilver-enabled FCMs was performed using an abrasion protocol to simulate cleaning, cutting, scraping and other stressful use conditions. Laser scanning confocal microscopy (LSCM) analysis showed a general increase in root mean square (RMS) roughness after FCM abrasion, and particle count (for particle sizes from 80 nm to 960 nm) at the surface was 4 orders of magnitude higher for the abraded FCMs. Migration was evaluated using both water and 3% (v/v, volume fraction) acetic acid as food simulants. Low concentrations of total Ag were detected in water simulants with a small portion (
ISSN:1944-0049
1944-0057
DOI:10.1080/19440049.2019.1654138