| Fractionation of aluminum in commercial green and roasted yerba mate samples ( Ilex paraguariensis St. Hil.) and in their infusions. | |
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MedLine Citation:
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PMID: 19055364 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Different trademarks of green mate and mate tea ( Ilex paraguariensis St. Hil.) were employed in this work, the aim of which was to compare the fractionation of Al from green mate and mate tea (roasted mate) and from their infusions. Using the flame atomic absorption spectrometry technique, contents determined for Al leached to green mate and mate tea infusions varied from 12.8 to 18.1% and from 5.9 to 10.6%, respectively. The concentrations of phenolics in infusions were determined using the Folin-Ciocalteu method, and the presence of melanoidins was also evaluated. The results showed that phenolic compounds are the major contributors to the leached Al in green mate infusions, but melanoidins also contribute in the case of infusions prepared from the mate tea. By employing a chelating resin batch procedure, it was observed that Al was predominantly in relatively inert forms, mainly in the case of mate tea infusions (50-70%). |
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Authors:
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Andrey Maldonado Gomes da Costa; Eurica Mary Nogami; Jesui Vergilio Visentainer; Nilson Evelazio de Souza; Edivaldo Egea Garcia |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 57 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2009 Jan |
Date Detail:
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Created Date: 2009-01-07 Completed Date: 2009-02-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 196-200 Citation Subset: IM |
Affiliation:
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Departamento de Quimica, Universidade Estadual de Maringa, Avenida Colombo 5790, CEP 87020-900, Maringa, Parana, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aluminum
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analysis,
chemistry,
isolation & purification* Beverages / analysis Chemical Fractionation Flavonoids / analysis Hot Temperature* Ilex paraguariensis / chemistry* Phenols / analysis Polymers / analysis Spectrophotometry, Atomic |
| Chemical | |
Reg. No./Substance:
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0/Flavonoids; 0/Phenols; 0/Polymers; 0/melanoidin polymers; 0/polyphenols; 7429-90-5/Aluminum |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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