Functional nanofibers in food processing

Novel mineralized electrospun chitosan/PVA/TiO2 nanofibrous composites for potential biomedical applications: computational and experimental insights

“…[4][5][6] Electrospun nanobrous materials can be fabricated to yield high porosity and a high surface area-to-volume ratio, which makes them qualify for several applications such as drug delivery, tissue engineering, wound healing, antibacterial agents, sensing, and food packaging. [7][8][9][10][11][12][13][14] Nanobrous composite materials are composed of either natural or synthetic polymers and play a crucial role especially in tissue attachment and regeneration in the biomedical eld owing to a high surface area in addition to their ability to provide high capacity of stabilized seeded cells entrapped on their mesh surfaces. [15][16][17][18] Chitosan (Cs), an amino sugar, is a natural polysaccharide polymer, which exists in nature in the cell walls of Zygomycetes or chitin.…”

Catalytic activity of trypsin entrapped in electrospun poly(ϵ-caprolactone) nanofibers

“…In addition, emulsion electrospinning is an advantageous strategy to encapsulate sensitive compounds, especially those susceptible to the external conditions (solvent, pH, temperature) including enzymes [12][13][14][15][16]. The high porosity and interconnectivity of the fiber arrays, combined with the large surface area per mass unit, satisfactory mechanical properties and the chemical and physical versatility of the nanofibrous electrospun materials, typically allow for high enzyme loads, high adaptability enabling the surface attachment and/or the entrapment of enzymes, adequate substrate accessibility, improved mass-transfer rates and the possibility of large scale productions and continuous processes [17,18]. Furthermore, due to their low resistance to the flow of liquids, they can be used for simultaneous biocatalysis and filtration.…”

Electro-Spinning and Electro-Spraying as Innovative Approaches in Developing of a Suitable Food Vehicle for Polyphenols-Based Functional Ingredients

“…Once the droplet is charged under an applied electrical field to the spinneret, the hemispherical surface of droplet is deformed into a conical shape known as the Taylor cone [132,138,139] through the action of two major electrostatic forces including internal electrostatic repulsion of similar charges and the coulombic force of external electric field, which is applied between the spinneret apex and the collector [122][123][124][125]. With the increase of electric field strength, more electrical charges accumulate on the surface of suspended droplet, especially until a critical point is reached, where internal electrostatic repulsion eventually overcomes the intrinsic molecular tension forces present at the surface of the droplet at the tip of the Taylor cone; an electrically charged jet of the polymer is then ejected from the tip of the Taylor cone and is driven towards the conductive collector (counter electrode [140]) that is, usually held at earth potential to encourage fibers and particles capture. As the jet takes flight between the spinneret and the collector, it experiences a range of competing instabilities including the surface tension driven Rayleigh-Plateau instability [141,142] and the electrically driven axisymmetric conducting instability and whipping/bending instability [136,142] (more correctly described as an expanding helix) [122,123,129].…”