Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling

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dc.contributor.authorAzevedo, Álvaro Bandeira Antunes de
dc.contributor.authorKieckbusch, Theo Guenter
dc.contributor.authorTashima, Alexandre Keiji
dc.contributor.authorMohamed, Rahoma Sadeg
dc.contributor.authorMazzafera, Paulo
dc.contributor.authorMelo, Silvio Alexandre Beisl Vieira de
dc.date.accessioned2022-04-07T10:44:42Z
dc.date.available2022-04-07T10:44:42Z
dc.date.issued2008
dc.description.abstractThe caffeine solubility in supercritical CO2 was studied by assessing the effects of pressure and temperature on the extraction of green coffee oil (GCO). The Peng-Robinson¹ equation of state was used to correlate the solubility of caffeine with a thermodynamic model and two mixing rules were evaluated: the classical mixing rule of van der Waals with two adjustable parameters (PR-VDW) and a density dependent one, proposed by Mohamed and Holder² with two (PR-MH, two parameters adjusted to the attractive term) and three (PR-MH3 two parameters adjusted to the attractive and one to the repulsive term) adjustable parameters. The best results were obtained with the mixing rule of Mohamed and Holder² with three parameters.pt_BR
dc.formatpdfpt_BR
dc.identifier.citationAZEVEDO, Á. B. A. et al. Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling. Química Nova, São Paulo, v. 31, n. 6, p. 1319-1323, 2008.pt_BR
dc.identifier.issn1678-7064
dc.identifier.urihttps://doi.org/10.1590/S0100-40422008000600009pt_BR
dc.identifier.urihttp://www.sbicafe.ufv.br/handle/123456789/13441
dc.language.isoenpt_BR
dc.publisherSociedade Brasileira de Químicapt_BR
dc.relation.ispartofseriesQuímica Nova;v.31, n.6, 2008
dc.rightsOpen Accesspt_BR
dc.subjectCcaffeine solubilitypt_BR
dc.subjectSupercritical carbon dioxidept_BR
dc.subjectCoffee oilpt_BR
dc.subject.classificationCafeicultura::Qualidade de bebidapt_BR
dc.titleSupercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modelingpt_BR
dc.typeArtigopt_BR

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