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

dc.contributor.author	Azevedo, Álvaro Bandeira Antunes de
dc.contributor.author	Kieckbusch, Theo Guenter
dc.contributor.author	Tashima, Alexandre Keiji
dc.contributor.author	Mohamed, Rahoma Sadeg
dc.contributor.author	Mazzafera, Paulo
dc.contributor.author	Melo, Silvio Alexandre Beisl Vieira de
dc.date.accessioned	2022-04-07T10:44:42Z
dc.date.available	2022-04-07T10:44:42Z
dc.date.issued	2008
dc.identifier.citation	AZEVEDO, 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.issn	1678-7064
dc.identifier.uri	https://doi.org/10.1590/S0100-40422008000600009	pt_BR
dc.identifier.uri	http://www.sbicafe.ufv.br/handle/123456789/13441
dc.description.abstract	The 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.format	pdf	pt_BR
dc.language.iso	en	pt_BR
dc.publisher	Sociedade Brasileira de Química	pt_BR
dc.relation.ispartofseries	Química Nova;v.31, n.6, 2008
dc.rights	Open Access	pt_BR
dc.subject	Ccaffeine solubility	pt_BR
dc.subject	Supercritical carbon dioxide	pt_BR
dc.subject	Coffee oil	pt_BR
dc.subject.classification	Cafeicultura::Qualidade de bebida	pt_BR
dc.title	Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling	pt_BR
dc.type	Artigo	pt_BR