Supercritical carbon dioxide extraction from solid matrix of vegetable origin

• Autorzy: Wawrzyniak P. , Kalemba D. , Wajs A.
• Języki publikacji: EN

Abstrakty

EN

The supercritical fluid extraction (SFE) of Nigella sativa L. (black cumin) was studied using Nigella seeds as a row material and CO2 as a solvent. Nigella sativa is widely distributed in Europe and western Asia. The Nigella seeds have been reported to have many medical properties and are used in folk medicine and as a spice in food. The effect of operation conditions was analyzed in a series of experiments at temperatures between 280 and 313 K and pressures between 8 and 10.0 MPa. The experimental data were analyzed in terms of yield, solvent requirement, loading, percent recovery and extraction rate. The results were compared with these obtained by solvent extraction of the material in Soxhlet apparatus by means of hexane. Volatiles were obtained from the extracts by hydrodistillation. The same volatile constituents in similar contents were identified in both SFE and hexane extracts. Chemical characterization of the compounds was carried out by the means of GC and GC-MS analysis. The non-volatile fraction will be subjected to further analysis.

Słowa kluczowe

EN

supercritical extration; carbon dioxide; nigella sativa; tymoquinone

PL

ekstrakcja nadkrytyczna; dwutlenek węgla; czarnuszka siewna; tymazolina

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2003
• Tom: Vol. 5, nr 4
• Strony: 67--69
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Wawrzyniak P.

autor

Kalemba D.

autor

Wajs A.

• Faculty of Process and Environmental Engineering, Technical University of Łódź, ul Wólczańska 213, 93-005 Łódź, tel. [phone], fax. [phone],

Bibliografia

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• (3) Reverchon E., Supercritical fluid extraction and fractionation of essential oils and related products, Joumal of Supercritical Fluids, 1997, ID, l.
• (4) Sovova H., Rate of the vegetableoil extraction with supercritical CO2 - l. Modelling of extraction curves, Chemical Engineering Science, 1994, 49, 409.
• (5) Roy B.C., Goto M., Hirose T., Extraction of Ginger OH with Supercritical Carbon Dioxide: Experiments and Modeling, Industrial and Engineering Chemistry Research, 1996, 35, 607.
• (6) Fulllana M., Trabelsi F., Recasens F., Use of neural net computing for statistical and kinetic modelling and simulation of supercritical fluid extractors, Chemical Engineering Science, 2000, 55,79.
• (7) Khan, A.M., Chemical composition and medical properties of Nigella sativa L., Inflammopharmacology, 1999, 7, 15.