Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/82146
Título: | Magnetically responsive chitosan-pectin films incorporating Fe3O4 nanoparticles with enhanced antimicrobial activity |
Autor(es): | Zarandona, Iratxe Correia, Daniela M. Moreira, Joana Costa, Carlos Miguel Silva Lanceros-Méndez, S. Guerrero, Pedro De la Caba, Koro |
Palavras-chave: | Chitosan-pectin films Antimicrobial capacity Magnetic properties Fe O nanoparticles 3 4 |
Data: | 2023 |
Editora: | Elsevier 1 |
Revista: | International Journal of Biological Macromolecules |
Citação: | Zarandona, I., Correia, D. M., Moreira, J., Costa, C. M., Lanceros-Mendez, S., Guerrero, P., & de la Caba, K. (2023, February). Magnetically responsive chitosan-pectin films incorporating Fe3O4 nanoparticles with enhanced antimicrobial activity. International Journal of Biological Macromolecules. Elsevier BV. http://doi.org/10.1016/j.ijbiomac.2022.11.286 |
Resumo(s): | Chitosan-pectin films with iron oxide (Fe3O4) magnetic nanoparticles were prepared by solution casting in order to produce biopolymer based magnetically active materials. Infrared (FTIR) spectra indicated physical interactions between the matrix and nanoparticles, corroborated by differential scanning calorimetry (DSC) results. In addition, thermal characterization suggested that the interactions between chitosan, pectin and the nanoparticles resulted in a less compact structure, influencing the film mechanical properties. Regarding vibrating-sample magnetometry (VSM) and electrical analysis, chitosan-pectin films with Fe3O4 nanoparticles showed ferrimagnetic behavior, with an increase of the dielectric constant as the nanoparticle concentration increased. Furthermore, films displayed enhanced antimicrobial activity against Escherichia coli (Gram-negative) and Staphylococcus epidermidis (Gram-positive) bacteria. Therefore, chitosan-pectin films with Fe3O4 magnetic nanoparticles provide promising results for active and intelligent food packaging applications. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/82146 |
DOI: | 10.1016/j.ijbiomac.2022.11.286 |
ISSN: | 0141-8130 |
e-ISSN: | 1879-0003 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0141813022028458 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
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70.pdf Acesso restrito! | 626,57 kB | Adobe PDF | Ver/Abrir |