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Article

In Situ Grafting of Silica Nanoparticle Precursors with Covalently Attached Bioactive Agents to Form PVA-Based Materials for Sustainable Active Packaging

1
Agro-Nanotechnology and Advanced Materials Center, The Department of Food Science, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7505101, Israel
2
Agricultural Engineering, Sensing, Information and Mechanization Engineering, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7505101, Israel
3
Faculty of Life Sciences, The Institute for Advanced Materials and Nanotechnology, Bar Ilan University, Ramat-Gan 5290002, Israel
4
Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7505101, Israel
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: André Ricardo Fajardo and Ismael Bellettini
Polymers 2021, 13(17), 2889; https://doi.org/10.3390/polym13172889
Received: 1 August 2021 / Revised: 21 August 2021 / Accepted: 23 August 2021 / Published: 27 August 2021
Sustainable antibacterial–antioxidant films were prepared using in situ graftings of silica nanoparticle (SNP) precursors with covalently attached bioactive agents benzoic acid (ba) or curcumin (cur) on polyvinyl alcohol (PVA). The modified PVA-SNP, PVA-SNP-ba and PVA-SNP-cur films were characterized using spectroscopic, physicochemical and microscopic methods. The prepared films showed excellent antibacterial and antioxidant activity, and increased hydrophobicity providing protection from undesired moisture. The PVA-SNP-ba films completely prevented the growth of the foodborne human pathogen Listeria innocua, whereas PVA-SNP-cur resulted in a 2.5 log reduction of this bacteria. The PVA-SNP-cur and PVA-SNP-ba films showed high antioxidant activity of 15.9 and 14.7 Mm/g TEAC, respectively. The described approach can serve as a generic platform for the formation of PVA-based packaging materials with tailor-made activity tuned by active substituents on silica precursors. Application of such biodegradable films bearing safe bioactive agents can be particularly valuable for advanced sustainable packaging materials in food and medicine. View Full-Text
Keywords: polyvinyl alcohol; silica nanoparticle; active package; antioxidant; antimicrobial polyvinyl alcohol; silica nanoparticle; active package; antioxidant; antimicrobial
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MDPI and ACS Style

Klein, M.; Molad Filossof, A.; Ashur, I.; Vernick, S.; Natan-Warhaftig, M.; Rodov, V.; Banin, E.; Poverenov, E. In Situ Grafting of Silica Nanoparticle Precursors with Covalently Attached Bioactive Agents to Form PVA-Based Materials for Sustainable Active Packaging. Polymers 2021, 13, 2889. https://doi.org/10.3390/polym13172889

AMA Style

Klein M, Molad Filossof A, Ashur I, Vernick S, Natan-Warhaftig M, Rodov V, Banin E, Poverenov E. In Situ Grafting of Silica Nanoparticle Precursors with Covalently Attached Bioactive Agents to Form PVA-Based Materials for Sustainable Active Packaging. Polymers. 2021; 13(17):2889. https://doi.org/10.3390/polym13172889

Chicago/Turabian Style

Klein, Miri, Anat Molad Filossof, Idan Ashur, Sefi Vernick, Michal Natan-Warhaftig, Victor Rodov, Ehud Banin, and Elena Poverenov. 2021. "In Situ Grafting of Silica Nanoparticle Precursors with Covalently Attached Bioactive Agents to Form PVA-Based Materials for Sustainable Active Packaging" Polymers 13, no. 17: 2889. https://doi.org/10.3390/polym13172889

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