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...
| Authors: | ; ; ; ; ; ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2026 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/28341 |
| Online Access: | http://hdl.handle.net/10256/28341 https://hdl.handle.net/10256/28341 |
| Access Level: | Open access |
| Keyword: | Zeolites Nanopartícules Nanoparticles Fibres de cel·lulosa Cellulose fibers Envasos de paper Paper containers Aliments -- Envasament Food -- Packaging |
| Summary: | 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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