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发表时间：2018-01-01

发表刊物：精细化工

所属单位：化工学院

卷号：35

期号：12

页面范围：1981-1986

ISSN号：1003-5214

摘要：Microcapsules loaded with quercetin were prepared by supercritical fluid extraction of emulsions (SFEE). The influence of process parameters, such as operating temperature and pressure, CO2 flow rate and emulsion parameters on solvent residue and particle size of microcapsules was studied. The solvent residue and microcapsules were characterized by headspace gas chromatography, field emission scanning electron microscopy, Zeta potential and Fourier transform infrared spectroscopy. The results showed that the solvent residue can be as low as 59 mg/L after 40 min treatment at 313 K, 9 MPa and CO2 flow rate of 0.4 L/min. When the mass concentration of wall material increased from 10 g/L to 100 g/L, the particle size of microcapsules increased from 0.9 ��m to 3.7 ��m. Compared with the solvent evaporation method, the SFEE method can effectively remove the organic solvent in a short time and the prepared microcapsule has high sphericity, clear interface and good stability in water. ? 2018, Editorial Office of FINE CHEMICALS. All right reserved.

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