Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity

Yerba mate (Ilex paraguariensis) is an indigenous crop which is highly consumed as an infusion in the South American subtropical forest. It has a high concentration of antioxidant substances, providing health benefits and helping to prevent diseases. The objectives of this work were to characterize...

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Detalles Bibliográficos
Autores principales: Deladino, Lorena, Schneider Teixeira, Aline, Reta, Mario Roberto, Molina Garcia, Antonio D., Navarro, Alba Sofía del Rosario, Martino, Miriam Nora
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Química
Yerba mate
Natural antioxidants
Freeze drying
DPPH
HPLC
PCL
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/98424
https://ri.conicet.gov.ar/11336/23876
http://file.scirp.org/Html/19-2700747_35294.htm
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-98424
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Yerba mate
Natural antioxidants
Freeze drying
DPPH
HPLC
PCL
spellingShingle Química
Yerba mate
Natural antioxidants
Freeze drying
DPPH
HPLC
PCL
Deladino, Lorena
Schneider Teixeira, Aline
Reta, Mario Roberto
Molina Garcia, Antonio D.
Navarro, Alba Sofía del Rosario
Martino, Miriam Nora
Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
topic_facet Química
Yerba mate
Natural antioxidants
Freeze drying
DPPH
HPLC
PCL
description Yerba mate (Ilex paraguariensis) is an indigenous crop which is highly consumed as an infusion in the South American subtropical forest. It has a high concentration of antioxidant substances, providing health benefits and helping to prevent diseases. The objectives of this work were to characterize an aqueous yerba mate extract by spectrophotometric and chromatographic (HPLC) methods and to study the effect of the freeze-drying process on the polyphenols profile and antioxidant activity, determined by a novel method. An aqueous extract was obtained and lyophilized to obtain a yerba mate powder with antioxidant properties. The extracts showed a high polyphenol content, determined by Folin-Ciocalteau and HPLC, and a high antioxidant activity towards the DPPH· radical and after the recently developed method of photochemiluminescence. A linear correlation was found between Folin-Ciocalteau and DPPH methods for lyophilized samples. HPLC analysis allowed determining antioxidant components like rutin, caffeine and chlorogenic acid. Lyophilization caused a decrease in total polyphenol content and antiradical activity of the extracts and this fact was mainly attributed to changes in the chlorogenic acid related compounds and rutin structures, after their photochemiluminescence data. The photoluminiscent method proves to be an advantageous approach for antioxidant capacity determination.
format Articulo
Articulo
author Deladino, Lorena
Schneider Teixeira, Aline
Reta, Mario Roberto
Molina Garcia, Antonio D.
Navarro, Alba Sofía del Rosario
Martino, Miriam Nora
author_facet Deladino, Lorena
Schneider Teixeira, Aline
Reta, Mario Roberto
Molina Garcia, Antonio D.
Navarro, Alba Sofía del Rosario
Martino, Miriam Nora
author_sort Deladino, Lorena
title Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
title_short Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
title_full Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
title_fullStr Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
title_full_unstemmed Major Phenolics in Yerba Mate Extracts (<i>Ilex paraguariensis</i>) and Their Contribution to the Total Antioxidant Capacity
title_sort major phenolics in yerba mate extracts (<i>ilex paraguariensis</i>) and their contribution to the total antioxidant capacity
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/98424
https://ri.conicet.gov.ar/11336/23876
http://file.scirp.org/Html/19-2700747_35294.htm
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