Emulsion Formation and Stabilization by Biomolecules: The Leading Role of Cellulose

Costa, Carolina; Medronho, Bruno; Filipe, Alexandra; Mira, Isabel; Lindman, Björn; Edlund, Håkan; Norgren, Magnus

doi:10.3390/polym11101570

Cited by 135 publications

(95 citation statements)

References 97 publications

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“…Oil-in-water nanoemulsions (O/W) exhibit a great ability to carry large quantities of hydrophobic substances in the dispersed phase and protect them from degradation. Such emulsions consist of oil droplets coated by thin polymer shells and suspended in an aqueous medium [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], so they can also be treated as dispersions of nanocapsules. They may serve as carriers of corrosion inhibitors, pesticides, and antimicrobial agents [ 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Polymer Capsules with Hydrophobic Liquid Cores as Functional Nanocarriers

et al. 2020

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Recent developments in the fabrication of core-shell polymer nanocapsules, as well as their current and future applications, are reported here. Special attention is paid to the newly introduced surfactant-free fabrication method of aqueous dispersions of nanocapsules with hydrophobic liquid cores stabilized by amphiphilic copolymers. Various approaches to the efficient stabilization of such vehicles, tailoring their cores and shells for the fabrication of multifunctional, navigable nanocarriers and/or nanoreactors useful in various fields, are discussed. The emphasis is placed on biomedical applications of polymer nanocapsules, including the delivery of poorly soluble active compounds and contrast agents, as well as their use as theranostic platforms. Other methods of fabrication of polymer-based nanocapsules are briefly presented and compared in the context of their biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Polymer Capsules with Hydrophobic Liquid Cores as Functional Nanocarriers

et al. 2020

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“…Particles with high aspect ratio, such as rod-shaped cellulose nanomaterials and other polysaccharides, are advantageous for Pickering emulsion stabilization, since they require lower concentration compared to spherical particles [ 83 ]. The behavior of polysaccharide nanomaterials at the interphase has been subject of recent reviews [ 67 , 84 , 85 ]. Oza and Frank reported the earlier scientific studies that demonstrated the ability of microcrystalline cellulose to stabilize oil-in-water ( o / w ) and multiple ( w / o / w ) emulsions.…”

Section: Methods Of Microcapsule Fabricationmentioning

confidence: 99%

Engineered Multilayer Microcapsules Based on Polysaccharides Nanomaterials

Lombardo

Villares

2020

Molecules

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The preparation of microcapsules composed by natural materials have received great attention, as they represent promising systems for the fabrication of micro-containers for controlled loading and release of active compounds, and for other applications. Using polysaccharides as the main materials is receiving increasing interest, as they constitute the main components of the plant cell wall, which represent an ideal platform to mimic for creating biocompatible systems with specific responsive properties. Several researchers have recently described methods for the preparation of microcapsules with various sizes and properties using cell wall polysaccharide nanomaterials. Researchers have focused mostly in using cellulose nanomaterials as structural components in a bio-mimetic approach, as cellulose constitutes the main structural component of the plant cell wall. In this review, we describe the microcapsules systems presented in the literature, focusing on the works where polysaccharide nanomaterials were used as the main structural components. We present the methods and the principles behind the preparation of these systems, and the interactions involved in stabilizing the structures. We show the specific and stimuli-responsive properties of the reported microcapsules, and we describe how these characteristics can be exploited for specific applications.

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“…Use of these sources of cellulose to stabilize PEs does not compete with agricultural resources used for human consumption and can bring economical value from co-products [ 22 , 23 ]. All these advantages explain the important increase of research on PEs stabilized with cellulose, and some review articles have already been published [ 2 , 24 , 25 ] to show that cellulose microcrystals and microfibrils can stabilize PEs. Cellulose NanoCrystals (CNCs) and NanoFibrils (CNFs) demonstrated a better potential to stabilize PEs but nanocellulose production is relatively complex.…”

Section: Introductionmentioning

confidence: 99%

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

Perrin

Gillet²,

Gressin³

et al. 2020

Polymers

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In the present review, natural and non-toxic particles made of micro/nanocellulose were specifically targeted as stabilizers of emulsions located at dispersed and continuous phases interfaces (called Pickering Emulsions, PEs). PEs are biphasic systems stabilized by solid particles with a recent interest in food and cosmetic domains. PEs have been more and more studied in the last ten years due to their advantages compared to conventional emulsions with surfactants. PEs have already been stabilized with various types of particles and particularly cellulose. Even if some studies showed that PEs were more stable when cellulose was chemically modified, numerous other recent studies showed that unmodified micro/nanocellulose is also promising biomaterial to stabilize PEs. Micro/nanocelluloses can be extracted by various green processes from numerous agricultural wastes and co-products, as banana peels, corncob, ginkgo seed shells, lime residues, mangosteen rind, oil palm empty fruit bunches, pistachio shells, as well as wheat straw. Main green processes used to treat cellulose are grinding, high pressure homogenization, microfluidization, enzymatic hydrolysis, subcritical water, extrusion, electron beam irradiation, cryocrushing, microwaves or sonication. PEs formulated with cellulose clearly participate to a global sustainable development but, additional studies will be necessary to better understand PEs stability and improve properties.

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Emulsion Formation and Stabilization by Biomolecules: The Leading Role of Cellulose

Cited by 135 publications

References 97 publications

Polymer Capsules with Hydrophobic Liquid Cores as Functional Nanocarriers

Polymer Capsules with Hydrophobic Liquid Cores as Functional Nanocarriers

Engineered Multilayer Microcapsules Based on Polysaccharides Nanomaterials

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

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