Development of biodegradable whey-based laminate functionalised by chitosan-natural extract formulations

Potrč, Sanja (avtor), Fras Zemljič, Lidija (avtor), Sterniša, Meta (avtor), Smole Možina, Sonja (avtor), Plohl, Olivija (avtor)

In this research, antimicrobial polysaccharide chitosan and natural extracts were used as surface coating of a plastic laminate with an integrated whey layer on the inside. The aim was to establish the biodegradable and active concept of packaging laminates. For this purpose, chitosan nanoparticles (CSNPs) with embedded rosemary or cinnamon extracts were synthesised and characterised. Additionally, a whey-based laminate was functionalised: i) chitosan macromolecular solution was applied as first layer and ii) cinnamon or rosemary extracts encapsulated in CSNPs were applied as upper layer (layer wise deposition). Such functionalised whey-based laminate was physicochemically characterized in terms of elemental surface composition, wettability, morphology and oxygen permeability. The antimicrobial activity was tested against Staphylococcus aureus, Escherichia coli, Aspergillus flavus and Penicillium verrucosum. The antioxidant properties were determined using the ABTS assay. It could be shown that after functionalization of the films with the above-mentioned strategy, the wettability was improved. Furthermore, such whey-based laminates still show excellent barrier properties, good antimicrobial activity and a remarkable antioxidative activity. In addition to the improved biodegradability, this type of lamination could also have a positive effect on the shelf-life of products packaged in such structured films.

• Jezik: Angleški jezik
• Ključne besede: whey laminate, functionalization, active packaging, chitosan, plant extracts, antimicrobial, antioxidants
• 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: 19 str.
• Številčenje: Vol. 21, iss. 10, art. 3668
• PID: 20.500.12556/RUL-133688
• UDK: 677.017:577
• ISSN pri članku: 1422-0067
• DOI: 10.3390/ijms21103668
• COBISS.SI-ID: 16763907
• Datum objave v RUL: 09.12.2021

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: 22.05.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: funkcionalizacija, aktivna embalaža, hitozan, rastlinski izvlečki, antimikrobna učinkovitost, antioksidanti