Supercritical fluid extraction of walnut kernel oil
2006; Wiley; Volume: 108; Issue: 7 Linguagem: Inglês
10.1002/ejlt.200600046
ISSN1438-9312
Autores Tópico(s)Fermentation and Sensory Analysis
ResumoEuropean Journal of Lipid Science and TechnologyVolume 108, Issue 7 p. 577-582 Research Paper Supercritical fluid extraction of walnut kernel oil Sema Salgın, Sema Salgın Cumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, Sivas, TurkeySearch for more papers by this authorUǧur Salgın, Corresponding Author Uǧur Salgın [email protected] Cumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, Sivas, TurkeyCumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, 58140 Sivas, Turkey. Phone: +90 346 2191010, Fax: +90 346 2191179Search for more papers by this author Sema Salgın, Sema Salgın Cumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, Sivas, TurkeySearch for more papers by this authorUǧur Salgın, Corresponding Author Uǧur Salgın [email protected] Cumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, Sivas, TurkeyCumhuriyet University, Faculty of Engineering, Department of Chemical Engineering, 58140 Sivas, Turkey. Phone: +90 346 2191010, Fax: +90 346 2191179Search for more papers by this author First published: 18 July 2006 https://doi.org/10.1002/ejlt.200600046Citations: 45AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract The objective of this study was to investigate the effects of the main process parameters on supercritical fluid extraction of walnut (Juglans regia L.) kernel oil. The recovery of walnut kernel oil was performed in a green and high-tech separation process. CO2 and CO2 + ethanol mixtures were used as the supercritical solvent. The extraction was carried out at operating pressures of 30, 40 and 50 MPa, operating temperatures of 313, 323 and 333 K, mean particle sizes of 1.78×10−4, 3.03×10−4, 4.78×10−4, 7.00×10−4 and 9.00×10−4 m, supercritical CO2 (SC CO2) flow rates of 1.67×10−8, 3.33×10−8, 6.67×10−8 and 13.33×10−8 m3/s and entrainer (ethanol) concentrations of 2, 4, 8 and 12 vol-%. Maximum extraction yield and oil solubility in SC CO2 obtained at 50 MPa, 333 K, 9.00×10−4 m, 3.33×10−4 m3/h were 0.65 kg oil/kg of dry sample and 37.16 g oil/kg CO2, respectively. The results obtained in this study showed that the crossover pressure effect of walnut kernel oil was at 30 MPa. At 30 MPa and 313 K, the obtained extraction yields above 4 vol-% ethanol reached the organic solvent extraction yield of 68.5 kg oil/kg dry sample. 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