Antibacterial and Barrier Properties of Gelatin Coated by Electrospun Polycaprolactone Ultrathin Fibers Containing Black Pepper Oleoresin of Interest in Active Food Biopackaging Applications

Abstract

The present study evaluated the effect of using electrospun polycaprolactone (PCL) as a barrier coating and black pepper oleoresin (OR) as a natural extract on the morphology, thermal, mechanical, antimicrobial, oxygen, and water vapor barrier properties of solvent cast gelatin (GEL). The antimicrobial activity of the developed multilayer system obtained by the so-called electrospinning coating technique was also evaluated against Staphylococcus aureus strains for 10 days. The results showed that the multilayer system containing PCL and OR increased the thermal resistance, elongated the GEL film, and significantly diminished its permeance to water vapor. Active multilayer systems stored in hermetically closed bottles increased their antimicrobial activity after 10 days by inhibiting the growth of Staphylococcus aureus. This study demonstrates that addition of electrospun PCL ultrathin fibers and OR improved the properties of GEL films, which promoted its potential use in active food packaging applications.

Electrospun Active Biopapers of Food Waste Derived Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Short-Term and Long-Term Antimicrobial Performance

“…The antimicrobial performance of the electrospun PHBV biopapers was determined based on the guidelines of the Japanese Industrial Standard JIS Z2801 (ISO 22196:2007) for film samples [64]. The dimension of the biopapers was 1.5 cm × 1.5 cm.…”

Enhanced Stability and Bioactivity of Curcuma comosa Roxb. Extract in Electrospun Gelatin Nanofibers

“…In order to study morphology of electrospun nanofibers fabricated under various experimental electrospinning conditions, all nanofiber samples were dried in a vacuum oven at 50 • C for 3 h. After that, each sample was cut into a small piece with a size of 1 × 1 cm, which was coated with gold before examined using a scanning electron microscope (JSM-6610 LV; SEM, JEOL, Tokyo, Japan). The diameters of each electrospun fiber were then determined using ImageJ 1.51 K. software (n ≥ 100) [29,30].…”

“…The acetic acid/water co-solvent system at the volumetric ratio of 9:1 was chosen for fabricating gelatin nanofibers by using electrospinning technique [29,30]. The morphology of electrospun gelatin nanofibers fabricated from gelatin solutions in acetic acid/water (9:1 v/v) at various gelatin concentrations was examined using scanning electron microscopy (SEM) From SEM image (Figure 2), the average diameters of electrospun nanofibers obtained from 20, 25, and 30% (w/v) gelatin solutions were 183 ± 29, 367 ± 64 and 547 ± 94 nm, respectively.…”

“…Several polymeric materials such as cellulose [22][23][24], polycaprolactone [25], poly (lactic acid) [26], polyvinyl alcohol [27,28] and gelatin [29,30] have been currently used to encapsulate many drugs or bioactive compounds by electrospinning. Gelatin, a hydrophilic polymer, has commonly been electrospun together with other polymers to carry bioactive compounds due to its biocompatible, nontoxic and biodegradable characteristics [31].…”

Microbiological and cytotoxic perspectives of active PCL/ZnO film for food packaging

“…PCL is biodegradable aliphatic thermoplastic polyester with high thermal stability, great potential for technological applications; good toughness and flexibility (Sogut and Seydim 2019). PCL presents superior viscoelastic properties related to other polyesters, being compatible with polymers from renewable and nonrenewable sources, it is properly used to process multilayer films with increased mechanical and barrier properties, which are essential for the packaging industry (Figueroa-Lopez et al 2018.…”