Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites

Detalhes bibliográficos
Autor(a) principal: Moraes, Elida de Paula
Data de Publicação: 2008
Outros Autores: Machado, Nádia Regina Camargo Fernandes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2779
Resumo: Selective adsorption on zeolites X and A was studied with Stevia rebaudiana (Bert.) Bertoni (Asteraceae) extract clarification. Ionic exchanges were made with calcium and barium ions in zeolites NaX and NaA and the effect of contact of aqueous extract of dry Stevia rebaudiana Bertoni leaves with CaX, BaX, CaA and BaA zeolites was evaluated. Stevia extract in contact with the zeolite CaX showed highest clarification and did not present alterations of initial characteristics in concentration, glycosides and flavor. In batch tests at room temperature, the contact of Stevia aqueous extract and CaX zeolite provided 70-80% clarification. Since zeolite may be reused, an approximate clarification of 65-70% is possible in regenerated zeolite.
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spelling Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolitesClarificação de extrato de Stevia rebaudiana (Bert.) Bertoni por adsorção em zeólitas modificadasclarificaçãoStevia rebaudiana (Bert.) Bertonizeólita CaXadsorção seletiva3.06.00.00-6 Engenharia QuímicaSelective adsorption on zeolites X and A was studied with Stevia rebaudiana (Bert.) Bertoni (Asteraceae) extract clarification. Ionic exchanges were made with calcium and barium ions in zeolites NaX and NaA and the effect of contact of aqueous extract of dry Stevia rebaudiana Bertoni leaves with CaX, BaX, CaA and BaA zeolites was evaluated. Stevia extract in contact with the zeolite CaX showed highest clarification and did not present alterations of initial characteristics in concentration, glycosides and flavor. In batch tests at room temperature, the contact of Stevia aqueous extract and CaX zeolite provided 70-80% clarification. Since zeolite may be reused, an approximate clarification of 65-70% is possible in regenerated zeolite.No presente trabalho, foi estudada a adsorção seletiva do extrato de Stevia rebaudiana (Bert.) Bertoni (Asteraceae) nas zeólitas X e A. Foram feitas trocas com íons de cálcio e bário nas zeólitas NaX e NaA. Foi avaliado o efeito do contato do extrato aquoso de Stevia com as zeólitas CaX, BaX, CaA and BaA. Os resultados mostraram que o extrato que ficou em contato com a zeólita CaX foi o que obteve maior descoloração e não teve as características iniciais alteradas, em termos de concentração, glicosídeos e sabor. Com testes feitos em batelada à temperatura ambiente, o contato entre o extrato aquoso de Stevia e a zeólita CaX, proporcionou uma descoloração entre 70-80%. Os testes mostraram ser possível a regeneração da zeólita, sendo possível a utilização da zeólita por mais de uma vez no processo, sendo alcançada uma descoloração entre 65-70%.Universidade Estadual De Maringá2008-05-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/277910.4025/actascitechnol.v23i0.2779Acta Scientiarum. Technology; Vol 23 (2001); 1375-1380Acta Scientiarum. Technology; v. 23 (2001); 1375-13801806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2779/1830Moraes, Elida de PaulaMachado, Nádia Regina Camargo Fernandesinfo:eu-repo/semantics/openAccess2024-05-17T13:02:50Zoai:periodicos.uem.br/ojs:article/2779Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:50Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
Clarificação de extrato de Stevia rebaudiana (Bert.) Bertoni por adsorção em zeólitas modificadas
title Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
spellingShingle Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
Moraes, Elida de Paula
clarificação
Stevia rebaudiana (Bert.) Bertoni
zeólita CaX
adsorção seletiva
3.06.00.00-6 Engenharia Química
title_short Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
title_full Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
title_fullStr Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
title_full_unstemmed Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
title_sort Clarification of Stevia rebaudiana (Bert.) Bertoni extract by adsorption in modified zeolites
author Moraes, Elida de Paula
author_facet Moraes, Elida de Paula
Machado, Nádia Regina Camargo Fernandes
author_role author
author2 Machado, Nádia Regina Camargo Fernandes
author2_role author
dc.contributor.author.fl_str_mv Moraes, Elida de Paula
Machado, Nádia Regina Camargo Fernandes
dc.subject.por.fl_str_mv clarificação
Stevia rebaudiana (Bert.) Bertoni
zeólita CaX
adsorção seletiva
3.06.00.00-6 Engenharia Química
topic clarificação
Stevia rebaudiana (Bert.) Bertoni
zeólita CaX
adsorção seletiva
3.06.00.00-6 Engenharia Química
description Selective adsorption on zeolites X and A was studied with Stevia rebaudiana (Bert.) Bertoni (Asteraceae) extract clarification. Ionic exchanges were made with calcium and barium ions in zeolites NaX and NaA and the effect of contact of aqueous extract of dry Stevia rebaudiana Bertoni leaves with CaX, BaX, CaA and BaA zeolites was evaluated. Stevia extract in contact with the zeolite CaX showed highest clarification and did not present alterations of initial characteristics in concentration, glycosides and flavor. In batch tests at room temperature, the contact of Stevia aqueous extract and CaX zeolite provided 70-80% clarification. Since zeolite may be reused, an approximate clarification of 65-70% is possible in regenerated zeolite.
publishDate 2008
dc.date.none.fl_str_mv 2008-05-05
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2779
10.4025/actascitechnol.v23i0.2779
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2779
identifier_str_mv 10.4025/actascitechnol.v23i0.2779
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2779/1830
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 23 (2001); 1375-1380
Acta Scientiarum. Technology; v. 23 (2001); 1375-1380
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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