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INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Innovative processes for oil encapsulation

oil encapsulation
© INRA
Microcapsules whose size is such that they minimize process interferences with the texture or appearance of the final product have been produced.

Encapsulation of active compounds is used to shield often-fragile compounds like oils from manufacturing/storage process-induced degradation and decay. We have produced microcapsules whose size is such that they minimize these process interferences with the texture or appearance of the final product. We developed a process that consists of forming droplets by dispersing the emulsion in a stirred alginate bath, and that works with either oil-in-water or water-in-oil emulsions. Alginate crosslinking to form the membrane then produced microcapsules at sizes in the range of 370 to 500 µm. The dispersion protocol was then re-engineered for a millifluidics process in order to control microcapsule size. We thus managed to produce monodisperse capsules size-bracketed to within diameters of 140 µm to 1.4 mm.

Participants

ONIRIS, Science without Borders (Brazil)

Publications

E. Martins, D. Poncelet, M. Marquis, J. Davy, D. Renard (2017) Monodisperse core-shell alginate (micro-)capsules with oil core generated from droplets millifluidic. Food Hydrocolloids, 63, 447-456, https://doi.org/10.1016/j.foodhyd.2016.09.018

E. Martins, D. Renard, Z. Adiwijaya, E. Karaoglan, D. Poncelet (2017) Oil encapsulation in core-shell alginate capsules by inverse gelation. I: Dripping methodology. J. Microencapsulation, 34(1), 82-90, https://doi.org/10.1080/02652048.2017.1284278

E. Martins, D. Poncelet, C.R. Ramires, D. Renard (2017) Oil encapsulation in core-shell alginate capsules by inverse gelation. II. Comparison between dripping techniques using W/O or O/W emulsions. J. Microencapsulation, https://doi.org/10.1080/02652048.2017.1365963

E. Martins, D. Poncelet, D. Renard (2017) A novel method of oil encapsulation in core-shell alginate microcapsules by inverse gelation technique. Reactive and Functional Polymers, 114, 49-57, https://doi.org/10.1016/j.reactfunctpolym.2017.03.006