Bio-based coatings as potential barriers to chemical contaminants from recycled paper and board for food packaging
Guazzotti, V; Marti, A; Piergiovanni, L; Limbo, S
| HERO ID | 2241692 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Bio-based coatings as potential barriers to chemical contaminants from recycled paper and board for food packaging |
| Authors | Guazzotti, V; Marti, A; Piergiovanni, L; Limbo, S |
| Journal | Food Additives & Contaminants: Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment |
| Volume | 31 |
| Issue | 3 |
| Page Numbers | 402-413 |
| Abstract | Partition and diffusion experiments were carried out with paper and board samples coated with different biopolymers. The aim was to evaluate the physicochemical behaviour and barrier properties of bio-coatings against migration of typical contaminants from recycled paper packaging. Focus was directed towards water-based, renewable biopolymers, such as modified starches (cationic starch and cationic waxy starch), plant and animal proteins (gluten and gelatine), poured onto paper with an automatic applicator. Additionally, a comparison with polyethylene-laminated paper was performed. Microstructural observations of the bio-coated paper allowed the characterisation of samples. From the partitioning studies, considerable differences in the adsorption behaviour of the selected contaminants between bio-coated or uncoated paper and air were highlighted. For both the polar and non-polar compounds considered (benzophenone and diisobutyl phthalate, respectively), the lowest values of partition coefficients were found when paper was bio-coated, making it evident that biopolymers acted as chemical/physical barriers towards these contaminants. These findings are discussed considering the characteristics of the tested biopolymers. Diffusion studies into the solid food simulant poly 2,6-diphenyl-p-phenylene oxide, also known as Tenax(®), confirmed that all the tested biopolymers slowed down migration. The Weibull kinetic model was fitted to the experimental data to compare migration from paper and bio-coated paper. Values found for β, an index determining the pattern of curvature, ranged from 1.1 to 1.7 for uncoated and polyethylene paper, whereas for bio-coated papers they ranged from 2.2 to 4.9, corresponding to the presence of an evident lag phase due to barrier properties of the tested bio-coatings. |
| Doi | 10.1080/19440049.2013.869360 |
| Pmid | 24279457 |
| Wosid | WOS:000333878500007 |
| Url | https://search.proquest.com/docview/1686721415?accountid=171501 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | food contact materials; paper and board; packaging; bio-based coating; migration modelling; diffusion; functional barrier |
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