Data/hora: 14/06/2024 13:39:06

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 20/04/2023
Data da última atualização: | 20/04/2023
Autoria: | MENDES, J. F.; NORCINO, L. B.; CORRÊA, T. Q.; BARBOSA, T. V.; PASCHOALIN, R. T.; MATTOSO, L. H. C.
Afiliação: | LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA.
Título: | Obtaining poly (lactic acid) nanofibers encapsulated with peppermint essential oil as potential packaging via solution-blow-spinning.
Ano de publicação: | 2023
Fonte/Imprenta: | International Journal of Biological Macromolecules, v. 230, 123424, 2023.
Páginas: | 1 - 13
ISSN: | 0141-8130
DOI: | https://doi.org/10.1016/j.ijbiomac.2023.123424
Idioma: | Inglês
Conteúdo: | The development of active packaging based on biodegradable material and incorporating active compounds, such as essential oil, is a new technique to ensure food safety without harming the environment. In this study, nanofiber mats of poly (lactic acid)/ polyethylene glycol (PLA/PEG) blend incorporated with peppermint essential oil (PO) at different ratios (5?20 % v/w) were produced by solution-blow-spinning (SBS) for potential packaging application. Electron microscopy showed a cylindrical and interlaced morphology for PLA/PEG/PO and a significant increase in the diameter (139?192 nm) of the nanofibers by increasing PO content. All nanofibers showed high thermal stability (278?345 &#9702;C) suitable for use in the food industry. Nuclear magnetic resonance (13C NMR) spectrum confirmed PO in the nanofibers after SBS. ATR-FTIR spectral analysis supported the chemical composition of the nanofiber mats. PO addition led to obtaining hydrophobic nanofibers, enhancing the contact angle to 122&#9702; and decreasing water vapor permeability (60 % reduction compared to the PLA/PEG (3.0 g.mm.kPa&#8722; 1 .h&#8722; 1 .m&#8722; 2 ). Although the PLA/PEG/20%PO nanofibers did not show halo formation in 24 h, they effectively extended the strawberries' shelf-life at 25 &#9702;C, evidencing PO release over time. It also reduced weight loss (2.5 % and 0.3 % weight loss after 5 days for PLA/PEG and PLA/PEG/20%PO, respectively) and increased firmness (8?12 N) for strawberries packed with the nanofiber mats. It is suggested that PLA/PEG films incorporating PO may be used as an active, environmentally friendly packaging
Palavras-Chave: | Fruit preservation.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (18220-1) - UPC - AP - DD - PROCI.23/35 -  - 2023/39 - DIS