Supercritical CO2 extraction of essential oil and oleoresin from chamomile (Chamomilla recutita [L.] Rauschert)

dc.creatorPovh, NP
dc.creatorMarques, MOM
dc.creatorMeireles, MAA
dc.date2001
dc.dateNOV
dc.date2014-11-13T21:16:28Z
dc.date2015-11-26T17:11:40Z
dc.date2014-11-13T21:16:28Z
dc.date2015-11-26T17:11:40Z
dc.date.accessioned2018-03-29T00:00:08Z
dc.date.available2018-03-29T00:00:08Z
dc.identifierJournal Of Supercritical Fluids. Elsevier Science Bv, v. 21, n. 3, n. 245, n. 256, 2001.
dc.identifier0896-8446
dc.identifierWOS:000172308200007
dc.identifier10.1016/S0896-8446(01)00096-1
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74762
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74762
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74762
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1281151
dc.descriptionFlowers of chamomile (Chamomilla recutita [L] Rauschert) were extracted with supercritical carbon dioxide using a fixed bed extractor. The experimental work was conducted to identify the best process conditions to maximize the yield of extract and its content of alpha -bisabolol and chamazulene. The experimental setup used a fixed bed extractor (diameter of 3.96 x 10(-2) m and length 16.55 x 10(-2) m). The fixed bed was formed with triturated chamomile ( - 28 to + 200 mesh) with an apparent density of 370 kg/m(3). Assays were conducted at temperatures of 30 and 40 degreesC, pressures of 100, 120, 160 and 200 bar. The solvent flow rates were 1.67 x 10(-5), 3.33 x 10(-5) and 6.67 x 10(-5) kg/s. A typical run took 10 h. The chemical composition of the extracts was determined using GC/MS and GC. The pressure and solvent flow rate significantly affected the mass transfer rate and the yield while the temperature did not. The maximum yield (mass of extract/mass of dried feed) was 4.33% (40 degreesC, 200 bar, 6.67 x 10(-5) kg/s). The overall extraction curves were well described by both a spline fitting and the pseudo steady state model of Sovova. The major compounds of the essential oil and of the oleoresin were beta -farnesene, alpha -farnesene, gamma -cadinene, alpha -bisabolol oxide B, alpha -bisabolol, chamazulene, alpha -bisabolol oxide A, cis and trans-dicycloether (MW 200). (C) 2001 Elsevier Science B.V. All rights reserved.
dc.description21
dc.description3
dc.description245
dc.description256
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationJournal Of Supercritical Fluids
dc.relationJ. Supercrit. Fluids
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectCO2 extraction
dc.subjectChamonilla recutita [L.] Rauschert
dc.subjectfixed bed extractor
dc.subjectCarbon-dioxide Extraction
dc.subjectModels
dc.titleSupercritical CO2 extraction of essential oil and oleoresin from chamomile (Chamomilla recutita [L.] Rauschert)
dc.typeArtículos de revistas


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