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Application of supercritical carbon dioxide for the extraction of alkylresorcinols from rye bran

da Cruz Francisco, José LU ; Danielsson, Bengt LU ; Kozubek, A and Dey, Estera LU (2005) In Journal of Supercritical Fluids 35(3). p.220-226
Abstract
The use of supercritical CO, (SC-CO2) for extracting alkylresorcinols from rye bran was investigated. For pure SC-CO2, 35 MPa and 55 degrees C were used. SC-CO2 with 10% ethanol or methanol as co-solvents was tested at four pressure levels (8, 15, 30 and 35 MPa) and two temperatures (40 and 55 degrees C). Experiments were conducted at a constant SC-CO2 flow of 5 g/min for 2 h. For comparative purposes acetone at ambient temperature and pressure was also used for extraction. The best extractions were achieved when SC-CO2 was used with co-solvents. At 55 degrees C and 15-30 MPa, the use Of SC-CO2 with co-solvents has yielded from 8 to 80% (w/w) more extracted product than acetone. Yield of extracts was proportional to pressure (when above 30... (More)
The use of supercritical CO, (SC-CO2) for extracting alkylresorcinols from rye bran was investigated. For pure SC-CO2, 35 MPa and 55 degrees C were used. SC-CO2 with 10% ethanol or methanol as co-solvents was tested at four pressure levels (8, 15, 30 and 35 MPa) and two temperatures (40 and 55 degrees C). Experiments were conducted at a constant SC-CO2 flow of 5 g/min for 2 h. For comparative purposes acetone at ambient temperature and pressure was also used for extraction. The best extractions were achieved when SC-CO2 was used with co-solvents. At 55 degrees C and 15-30 MPa, the use Of SC-CO2 with co-solvents has yielded from 8 to 80% (w/w) more extracted product than acetone. Yield of extracts was proportional to pressure (when above 30 MPa) and temperature. The results suggest that cleaner bran extracts can be obtained by using pure SC-CO2 followed by the addition of co-solvents. There is no clear advantage of using either methanol or ethanol. (c) 2005 Elsevier B.V. All rights reserved. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Journal of Supercritical Fluids
volume
35
issue
3
pages
220 - 226
publisher
Elsevier
external identifiers
  • wos:000232818900006
  • scopus:24144496185
ISSN
0896-8446
DOI
10.1016/j.supflu.2005.01.010
language
English
LU publication?
yes
id
a617318e-a21f-49d9-ad57-3a3996c542e0 (old id 152582)
date added to LUP
2007-07-16 09:34:35
date last changed
2017-08-20 03:40:14
@article{a617318e-a21f-49d9-ad57-3a3996c542e0,
  abstract     = {The use of supercritical CO, (SC-CO2) for extracting alkylresorcinols from rye bran was investigated. For pure SC-CO2, 35 MPa and 55 degrees C were used. SC-CO2 with 10% ethanol or methanol as co-solvents was tested at four pressure levels (8, 15, 30 and 35 MPa) and two temperatures (40 and 55 degrees C). Experiments were conducted at a constant SC-CO2 flow of 5 g/min for 2 h. For comparative purposes acetone at ambient temperature and pressure was also used for extraction. The best extractions were achieved when SC-CO2 was used with co-solvents. At 55 degrees C and 15-30 MPa, the use Of SC-CO2 with co-solvents has yielded from 8 to 80% (w/w) more extracted product than acetone. Yield of extracts was proportional to pressure (when above 30 MPa) and temperature. The results suggest that cleaner bran extracts can be obtained by using pure SC-CO2 followed by the addition of co-solvents. There is no clear advantage of using either methanol or ethanol. (c) 2005 Elsevier B.V. All rights reserved.},
  author       = {da Cruz Francisco, José and Danielsson, Bengt and Kozubek, A and Dey, Estera},
  issn         = {0896-8446},
  language     = {eng},
  number       = {3},
  pages        = {220--226},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Application of supercritical carbon dioxide for the extraction of alkylresorcinols from rye bran},
  url          = {http://dx.doi.org/10.1016/j.supflu.2005.01.010},
  volume       = {35},
  year         = {2005},
}