TY - JOUR
T1 - Supercritical CO2 extraction of nutmeg oil
T2 - Experiments and modeling
AU - Machmudah, Siti
AU - Sulaswatty, Anny
AU - Sasaki, Mitsuru
AU - Goto, Motonobu
AU - Hirose, Tsutomu
N1 - Funding Information:
This work was partly supported by Kumamoto University 21st century COE Program “Pulsed Power Science”.
PY - 2006/11
Y1 - 2006/11
N2 - Nutmeg oil was extracted from nutmeg seed at pressures of 15-20 MPa and temperatures of 313-323 K with supercritical CO2. The effects of separation parameters such as temperature, pressure, CO2 flow rate and particle size on the extraction rate of nutmeg oil were observed. Broken and intact cells (BIC) model combined with discontinuous phase equilibrium between fluid phase and solid phase, and shrinking core model were selected to describe the extraction process. For BIC model, the initial fraction solute in broken cell to total solute in the ground particle f, dimensionless transition concentration Xc and partition coefficient K were used as fitting parameters. For shrinking core model, two effective diffusivities De were used as fitting parameters. The best fitting of De1 was from 4.33 × 10-9 to 7.69 × 10-8 m2/s and De2 was from 1.90 × 10-9 to 3.20 × 10-8 m2/s. From comparison of experimental data and models calculation, the shrinking core model could describe the experimental data well for all extraction conditions, while the BIC model could only describe the data at lower extraction yields well.
AB - Nutmeg oil was extracted from nutmeg seed at pressures of 15-20 MPa and temperatures of 313-323 K with supercritical CO2. The effects of separation parameters such as temperature, pressure, CO2 flow rate and particle size on the extraction rate of nutmeg oil were observed. Broken and intact cells (BIC) model combined with discontinuous phase equilibrium between fluid phase and solid phase, and shrinking core model were selected to describe the extraction process. For BIC model, the initial fraction solute in broken cell to total solute in the ground particle f, dimensionless transition concentration Xc and partition coefficient K were used as fitting parameters. For shrinking core model, two effective diffusivities De were used as fitting parameters. The best fitting of De1 was from 4.33 × 10-9 to 7.69 × 10-8 m2/s and De2 was from 1.90 × 10-9 to 3.20 × 10-8 m2/s. From comparison of experimental data and models calculation, the shrinking core model could describe the experimental data well for all extraction conditions, while the BIC model could only describe the data at lower extraction yields well.
KW - BIC model
KW - Nutmeg oil
KW - Shrinking core model
KW - Supercritical CO extraction
UR - http://www.scopus.com/inward/record.url?scp=33751050674&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2006.01.007
DO - 10.1016/j.supflu.2006.01.007
M3 - Article
AN - SCOPUS:33751050674
SN - 0896-8446
VL - 39
SP - 30
EP - 39
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
IS - 1
ER -