Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations
In this research, antimicrobial polysaccharide chitosan was used as a surface coating for packaging material. The aim of our research was to establish an additive formulation of chitosan and antioxidative plant extracts as dispersion of nanoparticles. Chitosan nanoparticles with embedded thyme, rose...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/21/2/495 |
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| author | Lidija Fras Zemljič Olivija Plohl Alenka Vesel Thomas Luxbacher Sanja Potrč |
| author_facet | Lidija Fras Zemljič Olivija Plohl Alenka Vesel Thomas Luxbacher Sanja Potrč |
| author_sort | Lidija Fras Zemljič |
| collection | DOAJ |
| description | In this research, antimicrobial polysaccharide chitosan was used as a surface coating for packaging material. The aim of our research was to establish an additive formulation of chitosan and antioxidative plant extracts as dispersion of nanoparticles. Chitosan nanoparticles with embedded thyme, rosemary and cinnamon extracts were synthesized, and characterized for this purpose. Two representative, commercially used foils, polypropylene (PP) and polyethylene (PE), previously activated by UV/ozone to improve coating adhesion, were functionalized using chitosan-extracts nanoparticle dispersions. The foils were coated by two layers. A solution of macromolecular chitosan was applied onto foils as a first layer, followed by the deposition of various extracts embedded into chitosan nanoparticles that were attached as an upper layer. Since active packaging must assure bioactive efficiency at the interface with food, it is extremely important to understand the surface characteristics and phenomena of functionalized foils. The physico-chemical analyses of functionalized foils were thus comprised of surface elemental composition, surface charge, wettability, as well as surface morphology. It has been shown that coatings were applied successfully with an elemental composition, surface charge and morphology that should enable coating stability, homogeneity and consequently provide an active concept of the packaging surface in contact with food. Moreover, the wettability of foils was improved in order to minimize the anti-fogging behavior. |
| first_indexed | 2024-04-13T16:53:41Z |
| format | Article |
| id | doaj.art-09b3fbabe9fd4ce2863d2b1b93bb5bbb |
| institution | Directory Open Access Journal |
| issn | 1422-0067 |
| language | English |
| last_indexed | 2024-04-13T16:53:41Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-09b3fbabe9fd4ce2863d2b1b93bb5bbb2022-12-22T02:38:53ZengMDPI AGInternational Journal of Molecular Sciences1422-00672020-01-0121249510.3390/ijms21020495ijms21020495Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal FormulationsLidija Fras Zemljič0Olivija Plohl1Alenka Vesel2Thomas Luxbacher3Sanja Potrč4Laboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, SloveniaLaboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, SloveniaDepartment of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Teslova 30, SI-1000 Ljubljana, SloveniaAnton Paar GmbH, Anton-Paar-Street 20, A-8054 Graz, AustriaLaboratory for Characterization and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, SloveniaIn this research, antimicrobial polysaccharide chitosan was used as a surface coating for packaging material. The aim of our research was to establish an additive formulation of chitosan and antioxidative plant extracts as dispersion of nanoparticles. Chitosan nanoparticles with embedded thyme, rosemary and cinnamon extracts were synthesized, and characterized for this purpose. Two representative, commercially used foils, polypropylene (PP) and polyethylene (PE), previously activated by UV/ozone to improve coating adhesion, were functionalized using chitosan-extracts nanoparticle dispersions. The foils were coated by two layers. A solution of macromolecular chitosan was applied onto foils as a first layer, followed by the deposition of various extracts embedded into chitosan nanoparticles that were attached as an upper layer. Since active packaging must assure bioactive efficiency at the interface with food, it is extremely important to understand the surface characteristics and phenomena of functionalized foils. The physico-chemical analyses of functionalized foils were thus comprised of surface elemental composition, surface charge, wettability, as well as surface morphology. It has been shown that coatings were applied successfully with an elemental composition, surface charge and morphology that should enable coating stability, homogeneity and consequently provide an active concept of the packaging surface in contact with food. Moreover, the wettability of foils was improved in order to minimize the anti-fogging behavior.https://www.mdpi.com/1422-0067/21/2/495active food packagingchitosanextractsuv/ozone (uv/o<sub>3</sub>)pe/pp functionalizationsurface properties |
| spellingShingle | Lidija Fras Zemljič Olivija Plohl Alenka Vesel Thomas Luxbacher Sanja Potrč Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations International Journal of Molecular Sciences active food packaging chitosan extracts uv/ozone (uv/o<sub>3</sub>) pe/pp functionalization surface properties |
| title | Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations |
| title_full | Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations |
| title_fullStr | Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations |
| title_full_unstemmed | Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations |
| title_short | Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations |
| title_sort | physicochemical characterization of packaging foils coated by chitosan and polyphenols colloidal formulations |
| topic | active food packaging chitosan extracts uv/ozone (uv/o<sub>3</sub>) pe/pp functionalization surface properties |
| url | https://www.mdpi.com/1422-0067/21/2/495 |
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