Electrospun nanosystems based on PHBV and ZnO for ecological food packaging

Râpa M. ; Stefan M. ; Popa P.A. ; Toloman D. ; Leostean C. ; Borodi G. ; Vodnar D.C. ; Wrona M. (Universidad de Zaragoza) ; Salafranca J. (Universidad de Zaragoza) ; Nerín C. (Universidad de Zaragoza) ; Barta D.G. ; Suciu M. ; Predescu C. ; Matei E.

Resumen: The electrospun nanosystems containing poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and 1 wt% Fe doped ZnO nanoparticles (NPs) (with the content of dopant in the range of 0–1 wt% Fe) deposited onto polylactic acid (PLA) film were prepared for food packaging application. They were investigated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), antimicrobial analysis, and X-ray photoelectron spectrometry (XPS) techniques. Migration studies conducted in acetic acid 3% (wt/wt) and ethanol 10% (v/v) food simulants as well as by the use of treated ashes with 3% HNO3 solution reveal that the migration of Zn and Fe falls into the specific limits imposed by the legislation in force. Results indicated that the PLA/PHBV/ZnO:Fex electrospun nanosystems exhibit excellent antibacterial activity against the Pseudomonas aeruginosa (ATCC-27853) due to the generation of a larger amount of perhydroxyl (¿OOH) radicals as assessed using electron para-magnetic resonance (EPR) spectroscopy coupled with a spin trapping method. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Idioma: Inglés

DOI: 10.3390/polym13132123

Año: 2021

Publicado en: Polymers 13, 13 (2021), 13132123[19 pp]
ISSN: 2073-4360

Factor impacto JCR: 4.967 (2021)

Categ. JCR: POLYMER SCIENCE rank: 16 / 90 = 0.178 (2021) - Q1 - T1

Factor impacto CITESCORE: 5.7 - Materials Science (Q1)

Factor impacto SCIMAGO: 0.726 - Polymers and Plastics (Q1) - Chemistry (miscellaneous) (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)