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dc.contributor.authorSalgin, Ugur
dc.contributor.authorKorkmaz, Hasan
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T10:05:14Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T10:05:14Z
dc.date.issued2011
dc.identifier.issn0896-8446
dc.identifier.urihttps://dx.doi.org/10.1016/j.supflu.2011.06.002
dc.identifier.urihttps://hdl.handle.net/20.500.12418/9478
dc.descriptionWOS: 000294512100007en_US
dc.description.abstractIn this study, pumpkin seeds, called as "Urgup Sivrisi" and grown in Cappadocia region, were used as plant materials because of high aroma contents. In the supercritical fluid extraction of pumpkin seed oil, the effect of main process parameters as the particle size (250-2360 mu m), the volumetric flow rate of supercritical solvent (0.06-0.30 L/h), the operating pressure (20-50 MPa), the operating temperature (40-70 degrees C), the type of entrainer (ethanol and n-hexane) and those concentrations (0-10 vol.%) on the extraction yield, the oil solubility and the initial extraction rate were investigated. A cross-over effect for the extraction of pumpkin seed oil using supercritical CO(2) was determined at the operating pressure of 20-30 MPa. The maximum extraction yield obtained with entrainer free was reached 0.50 g oil/g dry seed at 600-1180 mu m. 0.12 L/h, 50 MPa and 70 degrees C for the operation time of 5 h. The maximum extraction yield obtained with ethanol as an entrainer in the experiments was reached 0.54 g oil/g dry seed at the conditions of 600-1180 mu m. 0.12 L/h, 30 MPa, 40 degrees C and 8 vol.% for the operating time of 2 h. The oil compositions were determined by gas chromatography analysis and the results showed that the compositions of pumpkin seed oil which were obtained by means of organic solvent extraction and supercritical fluid extraction were similar. The average oil compositions determined as 9.3 (+/- 0.43)% palmitic acid, 7.5 (+/- 0.6)% stearic acid, 32.3 (+/- 0.6)% oleic acid, 48.1 (+/- 0.6)% linoleic acid and 0.7 (+/- 0.3)% linolenic acid. The morphological changes in the seeds were determined by the scanning electron microscopy analysis. (C) 2011 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipCumhuriyet University [CUBAP-M404]; State Planning Organization (SPO) [2011K120250]en_US
dc.description.sponsorshipThe present work is part of the master thesis of Mr. Hasan Korkmaz. The authors acknowledge the financial supports provided by Cumhuriyet University Scientific Research Projects (Project code: CUBAP-M404) and by State Planning Organization (SPO Project code: 2011K120250). We would like to thank Mr. Hursit Simsek (Simaksan Company, Nevsehir, Turkey) for providing the pumpkin seed material.en_US
dc.language.isoengen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.isversionof10.1016/j.supflu.2011.06.002en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSupercritical fluid extractionen_US
dc.subjectSupercritical CO(2)en_US
dc.subjectPumpkin seed oilen_US
dc.subjectFatty acidsen_US
dc.subjectSolubility modelsen_US
dc.titleA green separation process for recovery of healthy oil from pumpkin seeden_US
dc.typearticleen_US
dc.relation.journalJOURNAL OF SUPERCRITICAL FLUIDSen_US
dc.contributor.department[Salgin, Ugur -- Korkmaz, Hasan] Cumhuriyet Univ, Fac Engn, Dept Chem Engn, TR-58140 Sivas, Turkeyen_US
dc.identifier.volume58en_US
dc.identifier.issue2en_US
dc.identifier.endpage248en_US
dc.identifier.startpage239en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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