Green Cu particles for functional and biodegradable food packaging solutions.

Autor: d'Agostino D; Department of Chemistry, University of Bari Aldo Moro, via E. Orabona 4, 70126 Bari, Italy., Sportelli MC; Department of Chemistry, University of Bari Aldo Moro, via E. Orabona 4, 70126 Bari, Italy; Bari Unit of CSGI consortium, University of Bari Aldo Moro, via E. Orabona, 4, 70126 Bari, Italy. Electronic address: maria.sportelli@uniba.it., Gentile L; Department of Chemistry, University of Bari Aldo Moro, via E. Orabona 4, 70126 Bari, Italy; Bari Unit of CSGI consortium, University of Bari Aldo Moro, via E. Orabona, 4, 70126 Bari, Italy., Desopo M; Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/A, 70126 Bari, Italy., Izzi M; Department of Chemistry, University of Bari Aldo Moro, via E. Orabona 4, 70126 Bari, Italy; Bari Unit of CSGI consortium, University of Bari Aldo Moro, via E. Orabona, 4, 70126 Bari, Italy., Incerti O; Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/A, 70126 Bari, Italy., Sanzani SM; Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/A, 70126 Bari, Italy., Cioffi N; Department of Chemistry, University of Bari Aldo Moro, via E. Orabona 4, 70126 Bari, Italy; Bari Unit of CSGI consortium, University of Bari Aldo Moro, via E. Orabona, 4, 70126 Bari, Italy.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2025 Feb 01; Vol. 464 (Pt 3), pp. 141823. Date of Electronic Publication: 2024 Oct 28.
DOI: 10.1016/j.foodchem.2024.141823
Abstrakt: This study demonstrates a simple approach to synthesize green Cu particles stabilized by poly(n-vinyl)pyrrolidone (PVP): the latter acts as stabilizer and dispersant, and its presence in solution eliminates the need for an inert atmosphere. Synthetic parameters were tuned to obtain particles with diameters >200 nm, to be human-safe and prevent nano-cytotoxicity. PVP and reductant concentrations, with reaction times, were varied to investigate their effect on colloidal stability, kinetics, and particles size. Particles were fully characterized, morphologically and spectroscopically. Cu@PVP colloids were washed, to remove unbound PVP and reactions byproducts, and then embedded in chitosan (CS) polymer matrix, to prepare self-standing films for food packaging applications. Films were obtained by a simple solvent evaporation protocol. Pellicles were characterized by common analytical techniques; viscoelastic properties, water uptake, and Cu 2+ ionic release were investigated, as well. The films antimicrobial efficacy was also tested against three different model fungi responsible for agrifood spoilage.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Danilo d'Agostino, Maria Chiara Sportelli, Luigi Gentile, Marika Desopo, Margherita Izzi, Ornella Incerti, Simona Marianna Sanzani, and Nicola Cioffi report financial support was provided by Italian Ministry of Agriculture, Food Sovereignty and Forests. Ornella Incerti reports financial support was provided by Italian Ministry of University and Research. Margherita Izzi, Luigi Gentile, and Nicola Cioffi report financial support was provided by Italian Ministry of University and Research. Maria Chiara Sportelli reports financial support was provided by Fondo Sociale Europeo - Research for Innovation (REFIN). If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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