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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.Vir: International journal of biological macromolecules [Elektronski vir]. - ISSN 1879-0003 (Vol. 270, part 2, [article no.] 132308, June 2024, 14 str.)Vrsta gradiva - e-članek ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 196837891
Avtor
Kaloper, Saša |
Plohl, Olivija |
Smole Možina, Sonja |
Vesel, Alenka |
Šimat, Vida |
Fras Zemljič, Lidija
Teme
hitozan |
rastlinski izvlečki |
polipropilen |
aktivna embalaža |
karakterizacija površin |
bioaktivnost |
chitosan |
plant extracts |
polypropylene |
active packaging |
surface characterization |
bioactivity
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Avtor | Kaloper, Saša ... |
Naslov | Exploring chitosan-plant extract bilayer coatings: Advancements in active food packaging via polypropylene modification [Elektronski vir] |
Datum objave | 2024-05-18 |
COBISS.SI-ID | 196837891 |
Verzija objave v repozitoriju | Založnikova različica |
Licenca objave v repozitoriju | Creative Commons Priznanje avtorstva-Brez predelav 4.0 Mednarodna |
Embargo | Takojšnja javna objava |
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Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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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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