Citation
Abstract
Colloidal silver nanoparticles were prepared via chemical reduction using polyethylene glycol (PEG) as a reducing agent, stabiliser and solvent. Silver polyethylene nanocomposites were produced via two methods, namely: melt blending and layer-by-layer (LBL) deposition of silver nanoparticles onto a polyethylene film. The silver ion release from either melt-blended or LBL-deposited nanocomposites into a food simulant and apple juice during 30 days at 4°C and 40°C was determined by atomic absorption spectroscopy. The effects of incorporating or coating of silver nanoparticles, silver concentration, contact media, temperature and time on silver ion migration were evaluated using factorial design. The diffusion coefficients of silver ions into the food simulants and apple juice were calculated using the Miltz model. The results indicated that the production method of nanocomposite, silver concentration, temperature, time and contact media showed a significant effect (p < 0.05) on silver ion migration. The quantity of silver ion migration from the nanocomposites into the food simulants and apple juice was less than the cytotoxicity-level concentration (10 mg kg(-1)) in all cases over 30 days. The coating of silver nanoparticles, higher silver concentration in the nanocomposite, higher temperature and acidic property of contact liquid all promoted the silver ion release from the nanocomposite films. The migration of silver ions from nanocomposites obeyed first-order diffusion kinetics.
Download File
Full text not available from this repository.
Official URL or Download Paper: http://www.tandfonline.com/doi/full/10.1080/194400...
|
Additional Metadata
Item Type: | Article |
---|---|
Divisions: | Faculty of Food Science and Technology |
DOI Number: | https://doi.org/10.1080/19440049.2013.878812 |
Publisher: | Taylor & Francis |
Keywords: | Nanocomposite packaging; Silver migration; Diffusion; Food simulants |
Depositing User: | Nurul Ainie Mokhtar |
Date Deposited: | 11 Jan 2016 03:33 |
Last Modified: | 11 Jan 2016 03:33 |
Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/19440049.2013.878812 |
URI: | http://psasir.upm.edu.my/id/eprint/35509 |
Statistic Details: | View Download Statistic |
Actions (login required)
View Item |