Oil core microcapsules by inverse gelation technique

Martins, Evandro; Renard, Denis; Davy, Joëlle; Marquis, Mélanie; Poncelet, Denis

doi:10.3109/02652048.2014.985342

Cited by 42 publications

(23 citation statements)

References 24 publications

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“…Two types of alginate (LV and HV) were investigated in this study and optimised separately to evaluate the effects of the variables in the responses. Each variable (or independent factor) and the levels used in this study were based on previous results and reports from the literature (Abang et al ., ; Martins et al ., ). Three variables were investigated: sodium alginate concentration (ξ 1 ), calcium chloride concentration (ξ 2 ) and time the particles remained in the alginate solution (ξ 3 ) (Table ).…”

Section: Methodssupporting

confidence: 86%

“…() and Martins et al . (), with some modifications. First, an oil‐in‐water (O/W) emulsion was prepared under high shear using a hand blender Model E310B (Everyday Essentials, Toronto, ON, Canada) for 1 min using sunflower oil (39 mL), Tween ® 80 (0.5%, v/v), Span ® 80 (0.8%, v/v) and calcium chloride solution (15 mL) at different concentrations based on the experimental matrix.…”

Section: Methodsmentioning

confidence: 97%

“…() and Martins et al . () recently investigated the effects of process variables on the characteristics of alginate particles encapsulated by inverse gelation. However, no statistical optimisation was performed for the variables investigated.…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Encapsulationof lycopene from watermelon in calcium‐alginate microparticles using an optimised inverse‐gelation method by response surface methodology

Celli

Teixeira

Duke

et al. 2016

Int J of Food Sci Tech

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Summary Lycopene exhibits strong antioxidant activity due to its unsaturated molecular bonds, which also contributes to its susceptibility for degradation. Encapsulation techniques can reduce lycopene degradation, increasing its potential applications in functional foods and nutraceuticals. The objective of this study was to optimise the encapsulation of lycopene from watermelon in alginate microparticles using the inverse gelation method. Box–Behnken design was used for the optimisation of three variables: concentrations of alginate (w/v %) and CaCl2 (g L−1), and gelation time (min). Two types of alginate were investigated (low viscosity and high viscosity) and optimised separately using encapsulation efficiency and loading capacity as responses. Results indicated that the models had a good fit to the experimental data and the optimal conditions varied depending on the type of alginate. In general, particles prepared with low‐viscosity alginate exhibited higher encapsulation efficiency and loading capacity and could be used for further research.

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Section: Methodssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 97%

See 1 more Smart Citation

Encapsulationof lycopene from watermelon in calcium‐alginate microparticles using an optimised inverse‐gelation method by response surface methodology

Celli

Teixeira

Duke

et al. 2016

Int J of Food Sci Tech

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show abstract

“…Using again the alginate capsules as an example, the system can be obtained by changing the localization of cells or other to be encapsulated materials in the solutions used in matrix-core/shell capsules, i.e., by dropping a cell suspension containing divalent ions into an alginate bath. [31,32] Immediately, a hydrogel membrane of alginate is formed surrounding the liquified core containing cells. An alternative methodology to obtain extremely thin membranes in the order of nanometers is to combine cell encapsulation techniques with the layer-by-layer (LbL) methodology.…”

Section: Spherical Systemsmentioning

confidence: 99%

Design Principles and Multifunctionality in Cell Encapsulation Systems for Tissue Regeneration

Correia

Reis

Mano

2018

Adv Healthcare Materials

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Cell encapsulation systems are being increasingly applied as multifunctional strategies to regenerate tissues. Lessons afforded with encapsulation systems aiming to treat endocrine diseases seem to be highly valuable for the tissue engineering and regenerative medicine (TERM) systems of today, in which tissue regeneration and biomaterial integration are key components. Innumerous multifunctional systems for cell compartmentalization are being proposed to meet the specific needs required in the TERM field. Herein is reviewed the variable geometries proposed to produce cell encapsulation strategies toward tissue regeneration, including spherical and fiber-shaped systems, and other complex shapes and arrangements that better mimic the highly hierarchical organization of native tissues. The application of such principles in the TERM field brings new possibilities for the development of highly complex systems, which holds tremendous promise for tissue regeneration. The complex systems aim to recreate adequate environmental signals found in native tissue (in particular during the regenerative process) to control the cellular outcome, and conferring multifunctional properties, namely the incorporation of bioactive molecules and the ability to create smart and adaptative systems in response to different stimuli. The new multifunctional properties of such systems that are being employed to fulfill the requirements of the TERM field are also discussed.

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“…Cotton cellulose nanocrystals and calcium carbonate was used to prepare Pickering emulsion in the first step, oil micro-droplets resulting from the Pickering emulsion were encapsulated within alginate micro-gels using microfluidics. Evandro Martins et al [ 27 , 28 ] proposed a technique of oil encapsulation in Ca-alginate microcapsules by inverse gelation. The oil containing calcium ions dropped into the sodium alginate solution, and the calcium ions diffused from inside to outside to obtain capsules.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Synthesis of Ca-Alginate Microcapsules for Self-Healing of Bituminous Binder

Shu

Dong

et al. 2018

Materials

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This work aims to develop an original alginate micro-emulsion combining with droplets microfluidic method to produce multinuclear Ca-alginate microcapsules containing rejuvenator for the self-healing of bituminous binder. The sizes of the Ca-alginate microcapsules could be easily controlled by tuning flow rates of the continuous and dispersed phases. The addition of a surfactant Tween80 not only improved the stability of the emulsion, but it also effectively reduced the size of the microcapsules. Size predictive mathematical model of the microcapsules was proposed through the analysis of fluid force. Optical microscope and remote Fourier infrared test confirmed the multinuclear structure of Ca-alginate microcapsules. Thermogravimetric analysis showed that the microcapsules coated with nearly 40% rejuvenator and they remained intact during the preparation of bitumen specimen at 135 °C. Micro self-healing process of bituminous binder with multinuclear Ca-alginate microcapsules containing rejuvenator was monitored and showed enhanced self-healing performance. Tensile stress-recovery test revealed that the recovery rate increased by 32.08% (in the case of 5% microcapsules), which meant that the Ca-alginate microcapsules containing rejuvenator could effectively enhance the self-healing property of bituminous binder.

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Oil core microcapsules by inverse gelation technique

Cited by 42 publications

References 24 publications

Encapsulationof lycopene from watermelon in calcium‐alginate microparticles using an optimised inverse‐gelation method by response surface methodology

Encapsulationof lycopene from watermelon in calcium‐alginate microparticles using an optimised inverse‐gelation method by response surface methodology

Design Principles and Multifunctionality in Cell Encapsulation Systems for Tissue Regeneration

Microfluidic Synthesis of Ca-Alginate Microcapsules for Self-Healing of Bituminous Binder

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