Pickering emulsions stabilized by naturally derived or biodegradable particles

Use and Understanding of the Role of Spontaneously Formed Nanocellulosic Fiber from Lime (Citrus aurantifolia Swingle) Residues to Improve Stability of Sterilized Coconut Milk

“…Pickering emulsion is the emulsion system stabilized by fine particles adsorbed at oil‐water interface (Calabrese, Courtenay, Edler, & Scott, ). Particles adhered at the interface form a mechanical (steric) barrier, which helps prevent coalescence of emulsion droplets (Dickinson, ).…”

Interest of Pickering Emulsions for Sustainable Micro/Nanocellulose in Food and Cosmetic Applications

“…PEs are stabilized by solid particles which can be of different morphologies, like fibrils, spheres, platelets, nanosheets, rods, cylinders, as well as cubes [ 11 , 12 ]. These particles have necessarily to be smaller than the droplets, and thus have generally a micro/nanoscale size.…”

“…These particles have necessarily to be smaller than the droplets, and thus have generally a micro/nanoscale size. Many particles have already used to stabilize PEs like silica, calcium carbonate, graphene, polysaccharides (cellulose, chitosan, starch), proteins (from lentil, chickpea, lupin, soy), polyphenol crystals, or synthetic polymer particles [ 12 , 13 , 14 ]. Contrary to surfactants, these particles did not stabilize emulsions by reducing interfacial tension, but by forming a physical barrier and a network which constituted an obstacle between two contiguous droplets and avoided droplets coalescence ( Figure 1 ).…”

“…If a particle has a contact angle below 90°, it is hydrophilic and, according to the Bancroft rule, enables to stabilize O/W emulsions. On the contrary, if the contact angle is above 90°, the particle is hydrophobic and enables to stabilize W/O emulsions [ 1 , 11 , 12 , 13 ]. Recently, authors studied also oil-in-oil emulsions stabilization by solid particles [ 16 ].…”

Charge-driven interfacial gelation of cellulose nanofibrils across the water/oil interface

“…3,12 CNP assembly across water/oil (W/O) interfaces has been broadly investigated in the context of Pickering emulsions, since CNP are good emulsion stabilizers. 13,14 The physicochemical properties of such emulsions are dictated by the coupled bulk (e.g., droplet-droplet interactions) and W/O interfacial properties (e.g., interfacial binding and rigidity). Although information regarding the bulk properties of emulsions can be obtained using several techniques (e.g., rheology, scattering techniques), probing the interfacial properties of microscopic droplets can be a challenge.…”