Obtaining poly (lactic acid) nanofibers encapsulated with peppermint essential oil as potential packaging via solution-blow-spinning

Autor(es)

Mendes, Juliana Farinassi ; Norcino, Lais Bruno ; Correa, Thaila Quatrini ; Barbosa, Talita Villa ; Paschoalin, Rafaella T. ; Mattoso, Luiz Henrique Capparelli

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 230, p. 13-pg., 2023-01-30.

Resumo

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 nano -fibers showed high thermal stability (278-345 degrees 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 degrees and decreasing water vapor permeability (60 % reduction compared to the PLA/PEG (3.0 g.mm.kPa(-1).h(-1).m(-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 degrees 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 incor-porating PO may be used as an active, environmentally friendly packaging material. (AU)

• Processo FAPESP: 17/18725-2 - Nanofibras híbridas com estruturas núcleo-casca e Janus obtidas por fiação por sopro em solução
• Beneficiário: Rafaella Takehara Paschoalin
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 19/26622-4 - Desenvolvimento de curativos nanoestruturados contendo agentes antimicrobianos visando aplicações de engenharia de tecido em bovinos
• Beneficiário: Juliana Farinassi Mendes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado