Pickering Emulsions Stabilized by Cyclodextrin Nanoparticles: A Review

Abstract

Pickering emulsions, stabilized by solid particles at the oil/water interface, are brought into focus due to their long‐term stability additional functionality and higher safety. Cyclodextrins are enzymatic derivatives of starch which have a hydrophobic inside cavity and a hydrophilic outside surface. Cyclodextrins aggregate and form crystalline nanoparticles at the interface of oil/water by self‐assembly which adsorbs on the surface of oil droplets to maintain the long‐term stability of the emulsion during the emulsifying process. Moreover, Cyclodextrins can form amphiphilic complex supermolecules nanoparticles with lipophilic molecules and be utilized to prepare functional Pickering emulsions owing to the appropriate size, reasonable structure, human edible, and environmentally benign. The review compiles and assesses the properties of cyclodextrins and the latest advances on preparations, characterizations, mechanisms and applications of Pickering emulsions stabilized by cyclodextrin nanoparticles. The results will help to deeply understand the structure and function relationship and expand the application of Pickering emulsion in various fields.

Technological Functionalisation of Microencapsulated Genistein and Daidzein Delivery Systems Soluble in the Stomach and Intestines

“…Studies comparing α-CD, β-CD, and γ-CD have revealed that β-CD exhibits the most pronounced emulsifying effect in the formation of Pickering emulsions [35,36].…”

Pickering emulsions stabilized by β-CD microcrystals: Construction and interfacial assembly mechanism

“…In food and pharmaceutical fields, the commonly used Pickering particles mainly include protein (zein, soy protein, and other protein particles), polysaccharides (starch, chitosan, celluloses, and other polysaccharide particles), cyclodextrins (CDs) and their derivatives, and other small particles. In other fields such as the daily chemical industry, leather industry, home textile industry, ecological environment field, and inorganic particles such as titanium dioxide particles, silica particles, and carbon nanotubes are commonly used as Pickering particles ( 4 ).…”

“…In other fields such as the daily chemical industry, leather industry, home textile industry, ecological environment field, and inorganic particles such as titanium dioxide particles, silica particles, and carbon nanotubes are commonly used as Pickering particles (4). Cyclodextrins (CDs) are a kind of cyclic oligosaccharides with cyclic glucose as the basic structural unit, which is produced by the degradation of starch by cycloglycosyltransferases produced by various bacilli (5).…”

pH/magnetic dual responsive Pickering emulsion stabilized by Fe3O4@SiO2@chitosan nanoparticles

“…19 Magnetic Fe 3 O 4 nanoparticles possess the dual advantages of nanoscale and magnetic particles. In addition, the modification of Fe 3 O 4 nanoparticles by organic polymers, such as cellulose, [20][21][22][23] cyclodextrins, 24,25 chitosan (CS), [26][27][28][29][30] as well as other polymers, [31][32][33] has been reported. The polymer in this composite material can effectively inhibit the agglomeration of magnetic nanoparticles, increase the surface effect of magnetic nanoparticles, and also introduce specific active functional groups on the polymer into the magnetic material.…”