Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes

Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes

Abstract Yerba-mate (Ilex paraguariensis St. Hil) is mainly consumed as “chimarrão”, a hot drink highly appreciated in Brazil, Argentina, Paraguay and Uruguay. This study evaluated the antioxidant potential of aqueous extracts of I. paraguariensis precipitated with ethanol. The leaves were processed as for tea product (TM) and oxidized (OX). The antioxidant potential was evaluated in cells of Saccharomyces cerevisiae deficient in antioxidant defense genes. Three strains evaluated were: a wild (EG) and two mutants (ctt1Δ e ctt1Δsod1Δ). These strains were pre-treated with the yerba-mate extracts (TM e OX) and submitted to oxidative stress induced by hydrogen peroxide. None of the extracts produced loss of cell viability. The extracts exerted antioxidant activity, protecting the strains (except sod1∆ctt1∆). The TM extract was more effective than OX. I. paraguariensis extracts showed a potential to be explored in the development of new products.

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Main Authors: Piovezan-Borges,A. C., Valério-Júnior,C., Gonçalves,I. L., Mielniczki-Pereira,A. A., Valduga,A. T.
Format: Digital revista
Language:English
Published: Instituto Internacional de Ecologia 2016
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016000200539
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spelling oai:scielo:S1519-698420160002005392016-06-16Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genesPiovezan-Borges,A. C.Valério-Júnior,C.Gonçalves,I. L.Mielniczki-Pereira,A. A.Valduga,A. T. I. paraguariensis St. Hil. mate tea black tea S. cerevisiae antioxidant potential Abstract Yerba-mate (Ilex paraguariensis St. Hil) is mainly consumed as “chimarrão”, a hot drink highly appreciated in Brazil, Argentina, Paraguay and Uruguay. This study evaluated the antioxidant potential of aqueous extracts of I. paraguariensis precipitated with ethanol. The leaves were processed as for tea product (TM) and oxidized (OX). The antioxidant potential was evaluated in cells of Saccharomyces cerevisiae deficient in antioxidant defense genes. Three strains evaluated were: a wild (EG) and two mutants (ctt1Δ e ctt1Δsod1Δ). These strains were pre-treated with the yerba-mate extracts (TM e OX) and submitted to oxidative stress induced by hydrogen peroxide. None of the extracts produced loss of cell viability. The extracts exerted antioxidant activity, protecting the strains (except sod1∆ctt1∆). The TM extract was more effective than OX. I. paraguariensis extracts showed a potential to be explored in the development of new products.info:eu-repo/semantics/openAccessInstituto Internacional de EcologiaBrazilian Journal of Biology v.76 n.2 20162016-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016000200539en10.1590/1519-6984.01115
institution SCIELO
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country Brasil
countrycode BR
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region America del Sur
libraryname SciELO
language English
format Digital
author Piovezan-Borges,A. C.
Valério-Júnior,C.
Gonçalves,I. L.
Mielniczki-Pereira,A. A.
Valduga,A. T.
spellingShingle Piovezan-Borges,A. C.
Valério-Júnior,C.
Gonçalves,I. L.
Mielniczki-Pereira,A. A.
Valduga,A. T.
Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
author_facet Piovezan-Borges,A. C.
Valério-Júnior,C.
Gonçalves,I. L.
Mielniczki-Pereira,A. A.
Valduga,A. T.
author_sort Piovezan-Borges,A. C.
title Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
title_short Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
title_full Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
title_fullStr Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
title_full_unstemmed Antioxidant potential of yerba mate (Ilex paraguariensis St. Hil.) extracts in Saccharomyces cerevisae deficient in oxidant defense genes
title_sort antioxidant potential of yerba mate (ilex paraguariensis st. hil.) extracts in saccharomyces cerevisae deficient in oxidant defense genes
description Abstract Yerba-mate (Ilex paraguariensis St. Hil) is mainly consumed as “chimarrão”, a hot drink highly appreciated in Brazil, Argentina, Paraguay and Uruguay. This study evaluated the antioxidant potential of aqueous extracts of I. paraguariensis precipitated with ethanol. The leaves were processed as for tea product (TM) and oxidized (OX). The antioxidant potential was evaluated in cells of Saccharomyces cerevisiae deficient in antioxidant defense genes. Three strains evaluated were: a wild (EG) and two mutants (ctt1Δ e ctt1Δsod1Δ). These strains were pre-treated with the yerba-mate extracts (TM e OX) and submitted to oxidative stress induced by hydrogen peroxide. None of the extracts produced loss of cell viability. The extracts exerted antioxidant activity, protecting the strains (except sod1∆ctt1∆). The TM extract was more effective than OX. I. paraguariensis extracts showed a potential to be explored in the development of new products.
publisher Instituto Internacional de Ecologia
publishDate 2016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016000200539
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