于文利, 夏菲, 金鹤阳, 等. Production of Submicroparticles of β-Sitosterol Using an Aerosol Solvent Extraction System[J]. 中国化学工程学报(英文版), 2008,16(6):956-960.
YU Wenli, XIA Fei, JIN Heyang, LIN Changchun, ZHAO Yaping, JIANG Siyuan, HE Lin. Production of Submicroparticles of β-Sitosterol Using an Aerosol Solvent Extraction System[J]. , 2008, 16(6): 956-960.
于文利, 夏菲, 金鹤阳, 等. Production of Submicroparticles of β-Sitosterol Using an Aerosol Solvent Extraction System[J]. 中国化学工程学报(英文版), 2008,16(6):956-960.DOI: 10.1016/S1004-9541(09)60023-9.
YU Wenli, XIA Fei, JIN Heyang, LIN Changchun, ZHAO Yaping, JIANG Siyuan, HE Lin. Production of Submicroparticles of β-Sitosterol Using an Aerosol Solvent Extraction System[J]. , 2008, 16(6): 956-960.DOI: 10.1016/S1004-9541(09)60023-9.
Production of Submicroparticles of β-Sitosterol Using an Aerosol Solvent Extraction System
The submicroparticles of β-sitosterol were produced by using an aerosol solvent extraction system (ASES) and characterized by scanning electronic microscope(SEM)
X-ray diffraction(XRD)
and Fourier transform infrared(FT-IR) analysis.The effects of operational parameters including pressure
temperature
solution concentration
and ratio of flow rate(CO
2
/solution
r
) on particle size(PS)
yield
and morphology were investiga
ted. The results showed that microparticles of β-sitosterol(less than 1000 nm size and larger than 70% yield) could be obtained at 10-15 MPa
35-50℃
15 mg·ml
-1
10/1(
r
);β-sitosterol particles were found to occur as three mophologies:flakes
rods
and spheres by varying ratio of flow rate or solution concentration.In contrast
the crystallinity of β-sitosterol decreased
whereas its molecular structure remained almost unchanged after being ASES-treated. Therefore
ASES was an effective method to produce submicroparticles of β-sitosterol.
Abstract
The submicroparticles of β-sitosterol were produced by using an aerosol solvent extraction system (ASES) and characterized by scanning electronic microscope(SEM)
X-ray diffraction(XRD)
and Fourier transform infrared(FT-IR) analysis.The effects of operational parameters including pressure
temperature
solution concentration
and ratio of flow rate(CO
2
/solution
r
) on particle size(PS)
yield
and morphology were investigated. The results showed that microparticles of β-sitosterol(less than
1000
nm size and larger than 70% yield) could be obtained at 10-15 MPa
35-50℃
15 mg·ml
-1
10/1(
r
);β-sitosterol particles were found to occur as three mophologies:flakes
rods
and spheres by varying ratio of flow rate or solution concentration.In contrast
the crystallinity of β-sitosterol decreased
whereas its molecular structure remained almost unchanged after being ASES-treated. Therefore
ASES was an effective method to produce submicroparticles of β-sitosterol.
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