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Exploring chitosan-plant extract bilayer coatings: Advancements in active food packaging via polypropylene modification [Elektronski vir]Kaloper, Saša ...UV-ozone activated polypropylene (PP) food films were subjected to a novel bilayer coating process involving primary or quaternary chitosan (CH/QCH) as the first layer and natural extracts from ... juniper needles (Juniperus oxycedrus; JUN) or blackberry leaves (Rubus fruticosus; BBL) as the second layer. This innovative approach aims to redefine active packaging (AP) development. Through a detailed analysis by surface characterization and bioactivity assessments (i.e., antioxidant and antimicrobial functionalities), we evaluated different coating combinations. Furthermore, we investigated the stability and barrier characteristics inherent in these coatings. The confirmed deposition, coupled with a comprehensive characterization of their composition and morphology, underscored the efficacy of the coatings. Our investigation included wettability assessment via contact angle (CA) measurements, X-ray photoelectron spectroscopy (XPS), and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), which revealed substantial enhancements in surface concentrations of elements and functional groups of CH, QCH, JUN, and BBL. Scanning electron microscopy (SEM) unveiled the coatings' heterogeneity, while time-of-flight secondary ion mass spectrometry (ToF-SIMS) and CA profiling showed moderately compact bilayers on PP, providing active species on the hydrophilic surface, respectively. The coatings significantly reduced the oxygen permeability. Additionally, single-layer depositions of CH and QCH remained below the overall migration limit (OML). Remarkably, the coatings exhibited robust antioxidative properties due to plant extracts and exceptional antimicrobial activity against S. aureus, attributed to QCH. These findings underscore the pivotal role of film surface properties in governing bioactive characteristics and offer a promising pathway for enhancing food packaging functionality.Source: International journal of biological macromolecules [Elektronski vir]. - ISSN 1879-0003 (Vol. 270, part 2, [article no.] 132308, June 2024, 14 str.)Type of material - e-article ; adult, seriousPublish date - 2024Language - englishCOBISS.SI-ID - 196837891
Author
Kaloper, Saša |
Plohl, Olivija |
Smole Možina, Sonja |
Vesel, Alenka |
Šimat, Vida |
Fras Zemljič, Lidija
Topics
hitozan |
rastlinski izvlečki |
polipropilen |
aktivna embalaža |
karakterizacija površin |
bioaktivnost |
chitosan |
plant extracts |
polypropylene |
active packaging |
surface characterization |
bioactivity
Author | Kaloper, Saša ... |
Title | Exploring chitosan-plant extract bilayer coatings: Advancements in active food packaging via polypropylene modification [Elektronski vir] |
Publication date | 2024-05-18 |
COBISS.SI-ID | 196837891 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution-NoDerivatives 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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Bio-zaščitne kulture in bioaktivni izvlečki kot trajnostne kombinirane strategije za podaljšanje obstojnosti mediteranske hrane | N4-0145-2020 |
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Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Tankoplastne strukture in plazemsko inženirstvo površin | P2-0082-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Razvoj visokoobčutljive elektrokemijske metode na osnovi magnetnih polimernih nanokompozitov za določanje spojin antibiotikov v sledovih v okolijskih sistemih | J1-4416-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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https://dk.um.si/IzpisGradiva.php?id=88818 |
https://repozitorij.uni-lj.si/IzpisGradiva.php?id=158207 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kaloper, Saša | 57074 |
Plohl, Olivija | 35476 |
Smole Možina, Sonja | 07030 |
Vesel, Alenka | 20048 |
Šimat, Vida | |
Fras Zemljič, Lidija | 19753 |
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