Bioactive characterization of packaging foils coated by chitosan and polyphenol colloidal formulations

Potrč, Sanja (avtor), Sterniša, Meta (avtor), Smole Možina, Sonja (avtor), Knez Hrnčič, Maša (avtor), Fras Zemljič, Lidija (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: food packaging, PE/PP functionalization, polyphenols, bioactive properties, activity, antimicrobial, antioxidant, chitosan
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 22 str.
• Številčenje: Vol. 21, iss. 7, art. 2610
• PID: 20.500.12556/RUL-133416
• UDK: 66.02
• ISSN pri članku: 1422-0067
• DOI: 10.3390/ijms21072610
• COBISS.SI-ID: 23115542
• Datum objave v RUL: 26.11.2021

Gradivo je del revije

• Naslov: International journal of molecular sciences
• Skrajšan naslov: Int. j. mol. sci.
• Založnik: MDPI
• ISSN: 1422-0067
• COBISS.SI-ID: 2779162

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 09.04.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: bioaktivne lastnosti, antioksidanti, antimikrobi, citozan, polifenoli