Multicompartment emulsion droplets for programmed release of hydrophobic cargoes

Abstract

Multi-compartmentalized microdroplets composed of a multiple subcompartment shell and single microscale host compartment core were prepared facilely for achieving programmed release of hydrophobic cargoes.

Oil–Water Interfacial-Directed Spontaneous Self-Assembly of Natural Quillaja Saponin for Controlling Interface Permeability in Colloidal Emulsions

“…Furthermore, wrinkling of the aqueous solution containing QS occurred and wrapped outside the oil drop to form the “crosslinked network” (see arrow), which further confirms the self-assembly of QS at the oil–water interface of the adjacent saponin molecules. This led to the locking together by self-assembled crosslinking between the molecules and provided a firm basis for the formation of simultaneously stabilizing emulsions and providing hierarchy comparts. ,, …”

“…This led to the locking together by selfassembled crosslinking between the molecules and provided a firm basis for the formation of simultaneously stabilizing emulsions and providing hierarchy comparts. 18,19,26 A minimization of interfacial free energy between the interface of two immiscible liquids is believed to be the driving force for selfassembly. 27 Presumably the self-assembly of QS absorbing and organizing at the oil−water interface forms a solid-like layer in a closely packed array and "surface skin".…”

Fabrication and characterization of novel thermoresponsive emulsion gels and oleogels stabilizied by assembling nanofibrous from dual natural triterpenoid saponins

“…Emulsions were first produced by emulsification in a one-pot strategy, according to the process described in our previous work ( Chen, et al, 2019 ). Briefly, soybean oil (at a fixed of 75 wt%), Quillaja saponin (1.5 wt%), glycyrrhizic acid (0.5–2.0 wt%) and phosphate-buffered saline (PBS, 20 mM, pH 7.0) were mixed.…”

Recent Advances and Applications of Plant-Based Bioactive Saponins in Colloidal Multiphase Food Systems

“…Moreover, the QS extracts can provide positive effects on the inhibition of lipid oxidation in in oil-in-water emulsions [ 85 ], and the emulsions also can be used to control flavor retention and release during simulated cooking [ 86 ]. Chen et al recently reported that the nanodroplets stabilized by QS can further serve as building blocks for fabricating microscale emulsion droplets, which display multicompartment architectures comprised of many nanodroplets as an interfacial shell and a single microdroplet core ( Figure 3 ) [ 87 ]. They found that the prepared multicompartment emulsion droplets can allow the programmed release of various volatile compounds by controlling the number of the QS-based nanodroplets around the surfaces of microdroplets, which can accurately manipulate the interfacial permeability ( Figure 3 ).…”

“… Schematic illustration of the mechanism for programmed release of hydrophobic cargoes from the multicompartment microdroplets stabilized by Quillaja saponin (QS)-coated nanodroplets. Images were reproduced with permission from [ 87 ]. …”