Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/90367
Título: | Active low-density Polyethylene-Based films by incorporating in the free state and loaded in PLA nanoparticles: a comparative study |
Autor(es): | Azevedo, Ana G. Barros, Carolina Miranda, Sónia Machado, A. V. Carneiro, O. S. Silva, Bruno Andrade, Mariana A. Vilarinho, Fernanda Saraiva, Margarida Sanches Silva, Ana Pastrana, Lorenzo M. Cerqueira, Miguel |
Palavras-chave: | active packaging biomaterial nanomaterial a-tocopherol |
Data: | 2-Fev-2024 |
Editora: | MDPI |
Revista: | Foods |
Resumo(s): | In this work, alpha-tocopherol (α-TOC) was encapsulated in poly(lactic acid) nanoparticles (PLA NPs) and added to low-density polyethylene (LDPE) films with the aim of producing an active film for food packaging applications. PLA NPs loaded with α-TOC were produced through nanoprecipitation and dried using two methods (freeze-dryer and oven). LDPE-based films with final polymeric matrix concentrations of 10 and 20 g/kg were then produced through blow extrusion. The results showed that LDPE-based films loaded with α-TOC can be produced using blow extrusion, and a good distribution of PLA NPs can be obtained within the LDPE matrix as observed using scanning electron microscopy (SEM). The mechanical properties were affected by the incorporation of α-TOC and PLA NPs loaded with α-TOC, with the observation of a decrease in tensile strength and Young’s Modulus values and an increase in elongation at break. Regarding water vapor permeability, the films showed a reduction in the values with the addition of α-TOC and PLA NPs loaded with α-TOC compared to the LDPE film (control). Films with α-TOC in the free state and loaded in PLA NPs showed antioxidant activity, but their behavior was affected by the encapsulation process. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/90367 |
DOI: | 10.3390/foods13030475 |
e-ISSN: | 2304-8158 |
Versão da editora: | https://www.mdpi.com/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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AI84_FoodPackaging.pdf | 11,86 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons