Unconventional and conventional Pickering emulsions: Perspectives and challenges in skin applications

Hazt, Bianca; Parchen, Gabriela Pereira; Amaral, Lilian Fernanda Martins do; Gallina, Patrícia Rondon; Martin, Sandra L.; Gonçalves, Odinei Hess; Freitas, Rilton Alves de

doi:10.1016/j.ijpharm.2023.122817

Cited by 9 publications

(2 citation statements)

References 106 publications

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“…In addition, the general availability of AC electric fields is another advantage of using this method for electro-emulsification. This study paves the path for a continuous, contactless, reliable, and energy-efficient emulsification process with potential applications in food preservation products, cosmetics and skin care, , and smart drug delivery. , Furthermore, the formed emulsions can be practical for a wide range of other applications in the food packaging industries, on demand catalysis of processes, and formation of nano- or micro-reinforced structures and engineered materials for surface treatment applications …”

Section: Introductionmentioning

confidence: 94%

Impact of Processing Parameters on Contactless EmulsificationviaCorona Discharge

2023

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A contactless emulsification method is presented using corona discharge. The corona discharge forms using a pin-to-plate configuration, creating a non-uniform electric field. This results in a simultaneous electrohydrodynamic (EHD) pumping of silicone oil and an electroconvection of water droplets that accelerate and submerge inside the oil, leading to a continuous water-in-oil (W/O) emulsion formation process. The impact of the oil viscosity and corona generating AC and DC electric fields (i.e., voltage and frequency) on the characteristics of the emulsions is studied. The emulsification power consumption using the AC and DC electric fields is calculated and compared to traditional emulsion formation methods. While using the DC electric field results in the formation of uniform emulsions, the AC electric field is readily available and uses less power for the emulsification. This is facile, contactless, and energy-efficient for the continuous formation of W/O emulsions.

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Section: Introductionmentioning

confidence: 94%

Impact of Processing Parameters on Contactless EmulsificationviaCorona Discharge

2023

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“…Stabilization of emulsions with solid particles (Pickering emulsions) has a number of advantages, which in general include higher physical stability, lower toxicity and the ability to impart new properties to the object, characteristic of the introduced solid particles (Mikhaylov et al 2021). Due to this, Pickering emulsions are of considerable interest and are widely used in various elds, including food (Nimaming et al 2023), cosmetic industry (Hazt et al 2023), as well as in biomedicine as a delivery system for fat-soluble compounds (Torlopov et A wide range of solid particles that can effectively stabilize emulsion droplets, include inorganic (Ribeiro et al 2023) as well as organic ones (Souza et al 2022). Polysaccharide nanoparticles, including CNC, are of particular interest as an emulsi er.…”

Section: Introductionmentioning

confidence: 99%

Physico-chemical properties of sunflower oil Pickering emulsions stabilized by cellulose nanocrystals-chitosan complex

Mikhaylov,

Torlopov,

Vaseneva

et al. 2024

Preprint

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In this study we investigated the use of a polyelectrolyte complex formed by cellulose nanocrystals (CNC) and chitosan (Chit) as a stabilizing agent for Pickering emulsions. We demonstrated that chitosan reduces surface charge of CNC, resulting in polyelectrolyte complexes that efficiently stabilize emulsions. Emulsification processes reveal that a slight change in chitosan concentration can recharge surface of CNC. An optimal stabilizing complex containing 1% chitosan gives emulsions with minimal zeta potential, droplet size, creaming index values, along with high stability during storage, change in pH, and application of high centrifugal forces. The study also shows that the maximum neutralized surface charge of the CNC in the CNC-Chit complex allows for effective adsorption on the surface of sunflower oil droplets, producing a denser stabilizing layer with smaller droplet size. Also, chitosan addition is linked to improved stability and higher viscosity, with little dependence on ionic strength and temperature. Potentiometric titration allowed to reveal that five-time less chitosan is needed to neutralize surface charge of acetylated CNC compared to sulfated CNC. It is established that the CNC-Chit ratio eliminates background electrolyte ion participation in neutralizing surface charge, resulting in the absence of characteristic pKa values of the initial components. Wettability on a hydrophilic surface depends on the surface charge of the complex, enhancing wettability and adhesion performance with increased chitosan content. Also, we showed that tuning of stabilizer composition can change bioaccessability of lipophilic compounds during oral administration.

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Cellulose nanocrystal/chitosan ratio in Pickering stabilizers regulates vitamin D3 release

Mikhaylov,

Torlopov,

Vaseneva

et al. 2024

Colloid Polym Sci

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Unconventional and conventional Pickering emulsions: Perspectives and challenges in skin applications

Cited by 9 publications

References 106 publications

Impact of Processing Parameters on Contactless EmulsificationviaCorona Discharge

Impact of Processing Parameters on Contactless EmulsificationviaCorona Discharge

Physico-chemical properties of sunflower oil Pickering emulsions stabilized by cellulose nanocrystals-chitosan complex

Cellulose nanocrystal/chitosan ratio in Pickering stabilizers regulates vitamin D3 release

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