AgNP–Zeolite integrated into cellulose nanofibers for enhanced ethylene scavenging performance
Postharvest accumulation of ethylene accelerates ripening and senescence, significantly reducing the shelf-life. This work developed a multifunctional ethylene-scavenging system utilizing silver nanoparticle (Ag NP)-functionalized TEMPO-oxidized cellulose nanofibers (TCNFs) combined with varying the...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/28341 |
| Acceso en línea: | http://hdl.handle.net/10256/28341 https://hdl.handle.net/10256/28341 |
| Access Level: | acceso abierto |
| Palabra clave: | Zeolites Nanopartícules Nanoparticles Fibres de cel·lulosa Cellulose fibers Envasos de paper Paper containers Aliments -- Envasament Food -- Packaging |
| Sumario: | Postharvest accumulation of ethylene accelerates ripening and senescence, significantly reducing the shelf-life. This work developed a multifunctional ethylene-scavenging system utilizing silver nanoparticle (Ag NP)-functionalized TEMPO-oxidized cellulose nanofibers (TCNFs) combined with varying the zeolite loadings. A dual-side coating strategy was employed: one side of the paper substrate was coated with one to three layers of alginate to enhance barrier performance, while the opposite side was coated with Ag NP-functionalized TCNFs containing 1–20% zeolite to provide ethylene scavenging and antibacterial properties. In-situ incorporation of Ag NPs into TCNF matrix improved suspension stability, reflected by an increase in ζ-potential to −31.3 ± 0.46 mV. Morphology and distribution of nanoparticles were analyzed using STEM and TEM techniques. SPR band at 424.13 nm and XRD reflections characteristics of face-centered cubic silver confirmed the formation of metallic Ag0. FTIR analysis confirmed the incorporation of zeolite into the Ag NP–TCNF network. The paper coated with 20% zeolite in the Ag NP–functionalized TCNFs exhibited the highest ethylene scavenging capacity, removing 0.8 ± 0.06 μL of ethylene (at 60 bar) per gram of coated paper, equivalent to 13.13 μL per gram of zeolite, corresponding to 50.05 μL/L ethylene elimination. The coated papers displayed significant improvements in barrier performance: grease resistance increased from a kit value of 1 (uncoated) to 12, the water vapor transmission rate decreased from ⁓1400 to 350 g·m−2·day−1, and air resistance rose from 28 to ⁓1800 Gurley seconds. They exhibited pronounced antibacterial activity of ⁓ 99% against Bacillus subtilis and Escherichia coli |
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