Long-term wear effects on nanosilver release from commercially available food contact materials
Autor: | Li-Piin Sung, Susana Addo Ntim, Gregory O. Noonan, Treye A. Thomas, David G. Goodwin |
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Rok vydání: | 2019 |
Předmět: |
Food Safety
Silver Particle number Surface Properties Abrasion (mechanical) Health Toxicology and Mutagenesis Metal Nanoparticles Nanoparticle Food Contamination 010501 environmental sciences Toxicology 01 natural sciences Article Silver nanoparticle Nanocomposites Acetic acid chemistry.chemical_compound 0404 agricultural biotechnology Anti-Infective Agents Humans Particle Size Dissolution Acetic Acid 0105 earth and related environmental sciences Microscopy Confocal Food Packaging Public Health Environmental and Occupational Health Water 04 agricultural and veterinary sciences General Chemistry General Medicine 040401 food science chemistry Volume fraction Particle Food Science Nuclear chemistry |
Zdroj: | Food Addit Contam Part A Chem Anal Control Expo Risk Assess |
ISSN: | 1944-0057 1944-0049 |
DOI: | 10.1080/19440049.2019.1654138 |
Popis: | 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 (−2) in the form of silver nanoparticles (AgNPs). Median particle diameter ranged from 39 nm to 50 nm with particle number concentrations on the order of 106 particles dm− 2. Total Ag migration into 3% (v/v) acetic acid was significantly higher than in water; however, 3% (v/v) acetic acid was not suitable for evaluation of NP release due to dissolution of AgNPs to Ag+ under acidic solution chemistries. |
Databáze: | OpenAIRE |
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