Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)

Detalhes bibliográficos
Autor(a) principal: Gnoatto, Simone Cristina Baggio
Data de Publicação: 2007
Outros Autores: Bassani, Valquiria Linck, Coelho, Geraldo Ceni, Schenkel, Eloir Paulo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/107630
Resumo: Ilex paraguariensis A. St. -Hil. is a native species of southern South America. The caffeine content in Ilex paraguariensis leaves has been considered an important quality parameter for maté-derived products. In this work different extraction methods for the determination of these methylxantines are compared. The influence of the extraction conditions on the methylxanthine yields was evaluated. Extraction by decoction with acidic aqueous solution (H2SO4 4N) presented the higher efficiency in the theobromine extraction. The extraction in a Soxhlet with acidic aqueous solution and decoction with acidic aqueous solution showed the highest caffeine yield. For the concomitant theobromine and caffeine quantification, the decoction with acidic aqueous solution is suggested.
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spelling Gnoatto, Simone Cristina BaggioBassani, Valquiria LinckCoelho, Geraldo CeniSchenkel, Eloir Paulo2014-12-02T02:20:43Z20070100-4042http://hdl.handle.net/10183/107630000719898Ilex paraguariensis A. St. -Hil. is a native species of southern South America. The caffeine content in Ilex paraguariensis leaves has been considered an important quality parameter for maté-derived products. In this work different extraction methods for the determination of these methylxantines are compared. The influence of the extraction conditions on the methylxanthine yields was evaluated. Extraction by decoction with acidic aqueous solution (H2SO4 4N) presented the higher efficiency in the theobromine extraction. The extraction in a Soxhlet with acidic aqueous solution and decoction with acidic aqueous solution showed the highest caffeine yield. For the concomitant theobromine and caffeine quantification, the decoction with acidic aqueous solution is suggested.application/pdfporQuímica nova. São Paulo. Vol. 30, n. 2 (Mar./Apr. 2007), p. 304-307MetilxantinasErva-mateIlex paraguariensisAquifoliaceaeMateIlex paraguariensisMethylxanthinesInfluência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)Influence of the extraction methodology on the methylxanthines content of maté (Ilex paraguariensis A. ST.-HIL., aquifoliaceae) info:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000719898.pdf000719898.pdfTexto completoapplication/pdf107900http://www.lume.ufrgs.br/bitstream/10183/107630/1/000719898.pdf5976818d44f11d40b0ad1023f97615afMD51TEXT000719898.pdf.txt000719898.pdf.txtExtracted Texttext/plain19113http://www.lume.ufrgs.br/bitstream/10183/107630/2/000719898.pdf.txt8837c5ab1dbab2ab6e209ec7a8f43764MD52THUMBNAIL000719898.pdf.jpg000719898.pdf.jpgGenerated Thumbnailimage/jpeg1919http://www.lume.ufrgs.br/bitstream/10183/107630/3/000719898.pdf.jpgb7721a55c335673e8456abbdfba0d2d0MD5310183/1076302018-10-22 08:27:06.825oai:www.lume.ufrgs.br:10183/107630Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2018-10-22T11:27:06Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
dc.title.alternative.en.fl_str_mv Influence of the extraction methodology on the methylxanthines content of maté (Ilex paraguariensis A. ST.-HIL., aquifoliaceae)
title Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
spellingShingle Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
Gnoatto, Simone Cristina Baggio
Metilxantinas
Erva-mate
Ilex paraguariensis
Aquifoliaceae
Mate
Ilex paraguariensis
Methylxanthines
title_short Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
title_full Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
title_fullStr Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
title_full_unstemmed Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
title_sort Influência do método de extração nos teores de metilxantinas em erva-mate (ilex paraguariensis a. st.-hil., aquifoliaceae)
author Gnoatto, Simone Cristina Baggio
author_facet Gnoatto, Simone Cristina Baggio
Bassani, Valquiria Linck
Coelho, Geraldo Ceni
Schenkel, Eloir Paulo
author_role author
author2 Bassani, Valquiria Linck
Coelho, Geraldo Ceni
Schenkel, Eloir Paulo
author2_role author
author
author
dc.contributor.author.fl_str_mv Gnoatto, Simone Cristina Baggio
Bassani, Valquiria Linck
Coelho, Geraldo Ceni
Schenkel, Eloir Paulo
dc.subject.por.fl_str_mv Metilxantinas
Erva-mate
Ilex paraguariensis
Aquifoliaceae
topic Metilxantinas
Erva-mate
Ilex paraguariensis
Aquifoliaceae
Mate
Ilex paraguariensis
Methylxanthines
dc.subject.eng.fl_str_mv Mate
Ilex paraguariensis
Methylxanthines
description Ilex paraguariensis A. St. -Hil. is a native species of southern South America. The caffeine content in Ilex paraguariensis leaves has been considered an important quality parameter for maté-derived products. In this work different extraction methods for the determination of these methylxantines are compared. The influence of the extraction conditions on the methylxanthine yields was evaluated. Extraction by decoction with acidic aqueous solution (H2SO4 4N) presented the higher efficiency in the theobromine extraction. The extraction in a Soxhlet with acidic aqueous solution and decoction with acidic aqueous solution showed the highest caffeine yield. For the concomitant theobromine and caffeine quantification, the decoction with acidic aqueous solution is suggested.
publishDate 2007
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/107630
dc.identifier.issn.pt_BR.fl_str_mv 0100-4042
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url http://hdl.handle.net/10183/107630
dc.language.iso.fl_str_mv por
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dc.relation.ispartof.pt_BR.fl_str_mv Química nova. São Paulo. Vol. 30, n. 2 (Mar./Apr. 2007), p. 304-307
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