期刊论文详细信息
Brazilian Journal of Chemical Engineering
Extraction/fractionation and deacidification of wheat germ oil using supercritical carbon dioxide
P. Zacchi2  J. Daghero1  P. Jaeger2  R. Eggers2 
[1] ,Technische Universität Hamburg-HarburgHamburg,Germany
关键词: Free fatty acids;    FFA;    Wheat germ oil;    Supercritical fluids;    Tocopherols;   
DOI  :  10.1590/S0104-66322006000100011
来源: SciELO
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【 摘 要 】

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.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

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