Journal
FOOD HYDROCOLLOIDS
Volume 110, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2020.106167
Keywords
Poly-3-hydroxybutyrate-co-hydroxyhexanoate; Whey proteins films; Nanoparticles
Categories
Funding
- PRIN: PROGETTI DI RICERCA DI RILEVANTE INTERESSE NAZIONALE - Bando
- Universita degli Studi di Napoli Federico II
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This work successfully prepared a nano-biocomposite material based on PHBHHx-NPs and WP, improving the mechanical properties and oxygen barrier properties of the film.
This work succeeded in the preparation of a nano-biocomposite material based on the use of poly-3hydroxybutyrate-co-hydroxyhexanoate nanoparticles (PHBHHx-NPs) within a scaffold of whey protein (WP) based films. The experimental conditions for PHBHHx-NPs preparation by solvent-evaporation technique were set up, and the obtained NPs characterized. Dynamic light scattering analyses showed that PHBHHx-NPs are stable, exhibiting a zeta-potential value close to -40 mV and a Z-average size of 80 nm. Morphological characterization by transmission and scanning electron microscopy confirmed nanoparticle average dimensions. The addition of PHBHHx-NPs to WP-based films improved the mechanical properties of the derived bioplastics, producing more extensible materials preserving their mechanical resistance. The grafting of PHBHHx-NPs as material fillers also enhanced the film barrier properties towards O-2, the permeability to both water vapor and CO2 remaining unaffected.
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