Bioactive characterization of packaging foils coated by chitosan and polyphenol colloidal formulations
ID Potrč, Sanja (Author), ID Sterniša, Meta (Author), ID Smole Možina, Sonja (Author), ID Knez Hrnčič, Maša (Author), ID Fras Zemljič, Lidija (Author)

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Polypropylene (PP) and polyethylene (PE) foils, previously activated by ultraviolet (UV)/ozone, were functionalized using chitosan-extract nanoparticle dispersions. A solution of macromolecular chitosan was applied onto foils as a first layer, followed by the deposition of various extracts encapsulated into chitosan nanoparticles, which were attached as an upper layer. Functionalized foils were analyzed from a bioactive point of view, i.e., regarding antimicrobial and antioxidant activity. Desorption kinetics were also studied. Moreover, barrier properties were examined, as the most important parameter influencing antimicrobial and antioxidant activity. Finally, all these properties were correlated with different surface parameters, determined previously, in order to understand if there is any direct correlation between surface elemental composition, surface charge, contact angle, or morphology and a specific bioactive property. It was shown that great bioactive properties were introduced due to the additive effect of antimicrobial chitosan and antioxidative plant extracts. Moreover, oxygen permeability decreased significantly, and the migration of polyphenols and chitosan from the foil surface was below the OML (overall migration limit), which is very important for food industry applications. Furthermore, surface properties of foils influence to some extent the desired bioactivity.

Keywords:food packaging, PE/PP functionalization, polyphenols, bioactive properties, activity, antimicrobial, antioxidant, chitosan
Work type:Article (dk_c)
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:22 str.
Numbering:Vol. 21, iss. 7, art. 2610
ISSN on article:1422-0067
DOI:10.3390/ijms21072610 This link opens in a new window
COBISS.SI-ID:23115542 This link opens in a new window
Publication date in RUL:26.11.2021
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Record is a part of a journal

Title:International journal of molecular sciences
Shortened title:Int. j. mol. sci.
COBISS.SI-ID:2779162 This link opens in a new window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:09.04.2020

Secondary language

Keywords:bioaktivne lastnosti, antioksidanti, antimikrobi, citozan, polifenoli

Document is financed by a project

Funder:Drugi - Drug financer ali več financerjev
Funding Programme:Republic of Slovenia
Name:Functional food for Future

Funder:EC - European Commission
Funding Programme:European Regional Development Fund
Name:Functional food for Future

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Name:Tekstilna kemija

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Name:Procesna sistemska tehnika in trajnostni razvoj

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Name:Mikrobiologija in biotehnologija živil in okolja

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