@misc{10481/108324,
year = {2025},
month = {10},
url = {https://hdl.handle.net/10481/108324},
abstract = {Food waste is a global challenge, with nearly 40% of food discarded annually, leading to
economic losses, food insecurity, and environmental harm. Major factors driving spoilage
include microbial contamination, enzymatic activity, oxidation, and excessive ethylene
production. Active packaging offers a promising solution by extending shelf life through the
selective absorption or release of specific substances. In this study, polyvinyl alcohol (PVA)
films incorporating metal-organic frameworks (MOFs) were prepared via solvent casting
to enhance their mechanical and barrier properties. Five MOFs (HKUST-1, MIL-88A, BASFA520, UiO-66, and MOF-801) were embedded in the PVA matrix and analyzed for their
physical, mechanical, and optical characteristics. The incorporation of TEMPO-oxidized
cellulose nanofibers (CNF) improved MOF dispersion, significantly strengthening film
performance. Among the formulations, PVA-CNF-MOF-801 exhibited the best performance,
with a 130% increase in tensile strength, a 50% reduction in water vapor permeability, and
a 168% improvement in UV protection compared with neat PVA films. Ethylene adsorption
tests with climacteric fruits confirmed that CNF-containing films retained ethylene more
effectively than those without CNFs, although the differences among the MOFs were
minimal. These results highlight the potential of PVA-CNF-MOF composite films as
sustainable active packaging materials, providing an effective strategy to reduce food waste
and its environmental impact.},
organization = {Ministerio de Ciencia, Innovación y Universidades (MICIU/MCIN) / AEI / FEDER, EU
(PID2022/142657OB-I00 / PID2023-152932OB-I00)},
organization = {MICIU / AEI / Unión Europea (PRIMA-S2-2023 / PCI2024-153453)},
organization = {Junta de Andalucía (Andalusian Regional Government) / FEDER
(ProyExcel_00492; FQM-346; FQM-175; RNM-940)},
organization = {Cotton South, S.L.
(Ref. 12021221)},
organization = {MICIU / AEI / Unión Europea – NextGenerationEU / PRTR
(“Juan de la Cierva” – JDC2022-048903-I; IJC2020-045041-I)},
publisher = {MDPI},
keywords = {Metal organic framework},
keywords = {Cellulose nanofibers},
keywords = {PVA},
title = {Engineering PVA-CNF-MOF Composite Films for Active Packaging: Enhancing Mechanical Strength, Barrier Performance, and Stability for Fresh Produce Preservation},
doi = {10.3390/molecules30193971},
author = {Carrasco, Sergio and Amaro-Gahete, Juan and Espinosa, Eduardo and Benítez, Almudena and Romero Salguero, Francisco J. and Rodríguez, Alejandro},
}