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Article: Supercritical Carbon Dioxide Extraction of Oil and Squalene from Amaranthus Grain

TitleSupercritical Carbon Dioxide Extraction of Oil and Squalene from Amaranthus Grain
Authors
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcau
Citation
Journal Of Agricultural And Food Chemistry, 2003, v. 51 n. 27, p. 7921-7925 How to Cite?
AbstractSupercritical carbon dioxide (SC CO 2) was used for the extraction of oil and squalene from Amaranthus grain. Very small amounts of oil could be extracted by SC CO 2 from undisrupted grains, although SC CO 2 possesses higher diffusivity. Grinding increased the extraction rate and oil yield, and smaller particle size gave higher extraction rate. The oil yield and initial extraction rate increased linearly with the increasing SC CO 2 flow rate from 1 to 2 L/min. Increasing the flow rate of SC CO 2 above 2 L/min resulted in only a slight increase of oil yield and extraction rate. In the pressure range of 150-250 bar, extraction decreased with increasing temperature at a constant pressure, whereas at a pressure of 300 bar, the extraction yield increased with increasing temperature. Possible reasons for this are discussed. Effects of temperature and pressure on squalene yield were different from those on oil yield. A good oil yield (4.77 g of oil/100 g of grain) was obtained at 40 °C and 250 bar. The highest squalene yield (0.31 g of squalene/100 g of grain) and concentration (15.3% in extract) were obtained at 50 °C and 200 bar, although the oil yield under this condition was low (2.07 g of oil/100 g of grain). The moisture content within 0-10% had little influence on yields of oil and squalene at 40 °C and 250 bar. Finally, the oil yield and the squalene concentration in the extracts by SC CO 2 were compared to those by solvent extraction.
Persistent Identifierhttp://hdl.handle.net/10722/178838
ISSN
2015 Impact Factor: 2.857
2015 SCImago Journal Rankings: 1.246
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHe, HPen_US
dc.contributor.authorCorke, Hen_US
dc.contributor.authorCai, JGen_US
dc.date.accessioned2012-12-19T09:50:03Z-
dc.date.available2012-12-19T09:50:03Z-
dc.date.issued2003en_US
dc.identifier.citationJournal Of Agricultural And Food Chemistry, 2003, v. 51 n. 27, p. 7921-7925en_US
dc.identifier.issn0021-8561en_US
dc.identifier.urihttp://hdl.handle.net/10722/178838-
dc.description.abstractSupercritical carbon dioxide (SC CO 2) was used for the extraction of oil and squalene from Amaranthus grain. Very small amounts of oil could be extracted by SC CO 2 from undisrupted grains, although SC CO 2 possesses higher diffusivity. Grinding increased the extraction rate and oil yield, and smaller particle size gave higher extraction rate. The oil yield and initial extraction rate increased linearly with the increasing SC CO 2 flow rate from 1 to 2 L/min. Increasing the flow rate of SC CO 2 above 2 L/min resulted in only a slight increase of oil yield and extraction rate. In the pressure range of 150-250 bar, extraction decreased with increasing temperature at a constant pressure, whereas at a pressure of 300 bar, the extraction yield increased with increasing temperature. Possible reasons for this are discussed. Effects of temperature and pressure on squalene yield were different from those on oil yield. A good oil yield (4.77 g of oil/100 g of grain) was obtained at 40 °C and 250 bar. The highest squalene yield (0.31 g of squalene/100 g of grain) and concentration (15.3% in extract) were obtained at 50 °C and 200 bar, although the oil yield under this condition was low (2.07 g of oil/100 g of grain). The moisture content within 0-10% had little influence on yields of oil and squalene at 40 °C and 250 bar. Finally, the oil yield and the squalene concentration in the extracts by SC CO 2 were compared to those by solvent extraction.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcauen_US
dc.relation.ispartofJournal of Agricultural and Food Chemistryen_US
dc.subject.meshAmaranthus - Chemistryen_US
dc.subject.meshCarbon Dioxideen_US
dc.subject.meshChromatography, Supercritical Fluid - Methodsen_US
dc.subject.meshParticle Sizeen_US
dc.subject.meshPlant Oils - Isolation & Purificationen_US
dc.subject.meshPressureen_US
dc.subject.meshSeeds - Chemistryen_US
dc.subject.meshSqualene - Isolation & Purificationen_US
dc.subject.meshTemperatureen_US
dc.titleSupercritical Carbon Dioxide Extraction of Oil and Squalene from Amaranthus Grainen_US
dc.typeArticleen_US
dc.identifier.emailCorke, H: harold@hku.hken_US
dc.identifier.authorityCorke, H=rp00688en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jf030488yen_US
dc.identifier.pmid14690374-
dc.identifier.scopuseid_2-s2.0-0346966103en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0346966103&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume51en_US
dc.identifier.issue27en_US
dc.identifier.spage7921en_US
dc.identifier.epage7925en_US
dc.identifier.isiWOS:000187565600014-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridHe, HP=55214942000en_US
dc.identifier.scopusauthoridCorke, H=7007102942en_US
dc.identifier.scopusauthoridCai, JG=7403153210en_US

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