Supercritical carbon dioxide extraction of methylxanthines from mate tea leaves

dc.creatorSaldana, MDA
dc.creatorMohamed, RS
dc.creatorMazzafera, P
dc.date2000
dc.dateSEP
dc.date2014-07-30T20:06:59Z
dc.date2015-11-26T17:53:01Z
dc.date2014-07-30T20:06:59Z
dc.date2015-11-26T17:53:01Z
dc.date.accessioned2018-03-29T00:36:34Z
dc.date.available2018-03-29T00:36:34Z
dc.identifierBrazilian Journal Of Chemical Engineering. Brazilian Soc Chemical Eng, v. 17, n. 3, n. 251, n. 259, 2000.
dc.identifier0104-6632
dc.identifierWOS:000089036900001
dc.identifier10.1590/S0104-66322000000300001
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74758
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74758
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290413
dc.descriptionMethylxanthines are alkaloids found in natural products such as tea, coffee and guarana. These alkaloids are commonly used in cola drinks and pharmaceutical products due principally to their stimulant and diuretic effects on the human organism. In this work, experimental data on the supercritical CO2 extraction of caffeine, theophylline and theobromine from herbal mate tea, a beverage traditionally consumed by the gauchos of southern Brazil, the Argentine, Paraguay and Uruguay, were obtained using high pressure extraction Equipment that allows adequate control of temperature and pressure. The continuous extraction/fractionation of mate tea leaves, Ilex paraguariensis in nature using carbon dioxide was carried out at 313.2 and 343.2 K and pressures of 13.8 and 25.5 MPa. Extraction/fractionation curves revealed the large influence of temperature and pressure on extraction yield. CO2 was also found to show a higher selectivity for caffeine than for theophylline and theobromine.
dc.description17
dc.description3
dc.description251
dc.description259
dc.languageen
dc.publisherBrazilian Soc Chemical Eng
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationBrazilian Journal Of Chemical Engineering
dc.relationBraz. J. Chem. Eng.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectsupercritical extraction
dc.subjectIlex paraguariensis
dc.subjectcaffeine
dc.subjecttheobromine
dc.subjecttheophylline
dc.subjectOxidative Dna-damage
dc.subjectGreen Tea
dc.subjectPurine Alkaloids
dc.subjectCaffeine
dc.subjectIlex
dc.subjectBeans
dc.subjectMice
dc.subjectCo2
dc.titleSupercritical carbon dioxide extraction of methylxanthines from mate tea leaves
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución