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Deposition of CAP/Antioxidants Systems on Silica Particles Using the Supercritical Antisolvent Process

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URI: http://hdl.handle.net/10498/23512

DOI: 10.3390/app10134576

ISSN: 2076-3417

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Author/s
García-Casas, Ignacio; Montes Herrera, Antonio; Valor Bravo, Diego; Pereyra López, Clara; Martínez de la Ossa Fernández, Enrique José
Date
2020-07
Department
Ingeniería Química y Tecnología de Alimentos
Source
Appl. Sci. 2020, 10(13), 4576
Abstract
Supercritical carbon dioxide has been used to deposit co-precipitates of natural antioxidants with a polymer onto silica microparticles. The supercritical antisolvent process (SAS) was carried out with the antioxidants by introducing the silica microparticles into the precipitator vessel. Two di erent configurations were employed to pump the solution. In one configuration, the antioxidant and the polymer were dissolved and injected together through a nozzle. In the second configuration, the antioxidant and the polymer were dissolved in di erent solutions and sprayed through di erent nozzles. The use of operating conditions significantly above the critical point (180 bar and 323 K) led to the formation of composites made up of co-precipitates and silica. Delivery profiles showed that the presence of the polymer and the silica delayed release of the antioxidant into gastric media, thus protecting it and allowing its full delivery to the intestinal fluids to improve the e ectiveness of the antioxidant.
Subjects
supercritical deposition; quercetin; mangiferin; cellulose acetate phthalate; supercritical antisolvent process
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  • Articulos Científicos Ing. Quim. [47]
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This work is under a Creative Commons License Atribución 4.0 Internacional

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