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

Detalhes bibliográficos
Autor(a) principal: Azevedo,Álvaro Bandeira Antunes de
Data de Publicação: 2008
Outros Autores: Kieckbusch,Theo Guenter, Tashima,Alexandre Keiji, Mohamed,Rahoma Sadeg, Mazzafera,Paulo, Melo,Silvio Alexandre Beisl Vieira de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600009
Resumo: 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.
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spelling Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modelingcaffeine solubilitycoffee oilsupercritical carbon dioxideThe 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.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600009Química Nova v.31 n.6 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000600009info:eu-repo/semantics/openAccessAzevedo,Álvaro Bandeira Antunes deKieckbusch,Theo GuenterTashima,Alexandre KeijiMohamed,Rahoma SadegMazzafera,PauloMelo,Silvio Alexandre Beisl Vieira deeng2008-10-13T00:00:00Zoai:scielo:S0100-40422008000600009Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-10-13T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
title Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
spellingShingle Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
Azevedo,Álvaro Bandeira Antunes de
caffeine solubility
coffee oil
supercritical carbon dioxide
title_short Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
title_full Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
title_fullStr Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
title_full_unstemmed Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
title_sort Supercritical CO2 recovery of caffeine from green coffee oil: new experimental solubility data and modeling
author Azevedo,Álvaro Bandeira Antunes de
author_facet Azevedo,Álvaro Bandeira Antunes de
Kieckbusch,Theo Guenter
Tashima,Alexandre Keiji
Mohamed,Rahoma Sadeg
Mazzafera,Paulo
Melo,Silvio Alexandre Beisl Vieira de
author_role author
author2 Kieckbusch,Theo Guenter
Tashima,Alexandre Keiji
Mohamed,Rahoma Sadeg
Mazzafera,Paulo
Melo,Silvio Alexandre Beisl Vieira de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Azevedo,Álvaro Bandeira Antunes de
Kieckbusch,Theo Guenter
Tashima,Alexandre Keiji
Mohamed,Rahoma Sadeg
Mazzafera,Paulo
Melo,Silvio Alexandre Beisl Vieira de
dc.subject.por.fl_str_mv caffeine solubility
coffee oil
supercritical carbon dioxide
topic caffeine solubility
coffee oil
supercritical carbon dioxide
description 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.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000600009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.31 n.6 2008
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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