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Extraction/fractionation and deacidification of wheat germ oil using supercritical carbon dioxide
Citation Link: https://doi.org/10.15480/882.2890
Publikationstyp
Journal Article
Date Issued
2006
Sprache
English
Author(s)
Institut
TORE-DOI
TORE-URI
Volume
23
Issue
1
Start Page
105
End Page
110
Citation
Brazilian Journal of Chemical Engineering 1 (23): 105-110 (2006-01-01)
Publisher DOI
Scopus ID
Publisher
ABEQ
Wheat germ oil was obtained by mechanical pressing using a small-scale screw press and by supercritical extraction in a pilot plant. With this last method, different pressures and temperatures were tested and the tocopherol concentration in the extract was monitored during extraction. Then supercritical extracted oil as well as commercial pressed oil were deacidified in a countercurrent column using supercritical carbon dioxide as solvent under different operating conditions. Samples of extract, refined oil and feed oil were analyzed for free fatty acids (FFA) and tocopherol contents. The results show that oil with a higher tocopherol content can be obtained by supercritical extraction-fractionation and that FFA can be effectively removed by countercurrent rectification while the tocopherol content is only slightly reduced.
Subjects
FFA
Free fatty acids
Supercritical fluids
Tocopherols
Wheat germ oil
DDC Class
620: Ingenieurwissenschaften
More Funding Information
The authors would like to thank Volkswagen-Stiftung for its financial support and Roland Mühle, Bremen, Germany for supplying the wheat germs.
Publication version
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