Precipitation of β-carotene microparticles from SEDS technique using supercritical CO2 |
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Authors: | E. Franceschi A.M. De Cesaro S.R.S. Ferreira J. Vladimir Oliveira |
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Affiliation: | aDepartment of Food Engineering, URI – Campus de Erechim, Av. Sete de Setembro, 1621, Erechim, RS 99700-000, Brazil;bEQA-CTC/UFSC, Chemical Engineering and Food Engineering Department, Federal University of Santa Catarina, C.P. 476, CEP 88040-900, Florianópolis, SC, Brazil |
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Abstract: | This work investigates the application of the Solution-Enhanced Dispersion by supercritical fluids technique for the precipitation of β-carotene. The effect of pressure (8.0–12.0 MPa), temperature (293–313 K) anti-solvent flow rate (20–40 mL/min), solution flow rate (1–4 mL/min) and concentration of β-carotene in the dichloromethane solution (4 and 8 mg/mL) on the precipitation yield, particle morphology and particle size and size distribution was examined. Precipitated powders presented mean particle size varying from 3.2 μm to 96.8 μm with morphology of β-carotene microparticles changing from plate-like to leaf-like particles. The statistical analysis of the experimental results revealed that pressure, organic solution concentration and CO2 flow rate had a significant effect on particle size. The precipitation yield was observed to be within the range of 71–94% and was statistically influenced by system temperature and pressure, and anti-solvent flow rate. |
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Keywords: | SEDS technique Anti-solvent Carbon dioxide β -Carotene Precipitation yield |
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