| In vivo bioavailability of selenium in enriched Pleurotus ostreatus mushrooms. | |
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MedLine Citation:
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PMID: 21069148 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The in vivo bioavailability of Se was investigated in enriched Pleurotus ostreatus mushrooms. A bioavailability study was performed using 64 Wistar male rats separated in 8 groups and fed with different diets: without Se, with mushrooms without Se, with enriched mushrooms containing 0.15, 0.30 or 0.45 mg kg(-1) Se and a normal diet containing 0.15 mg kg(-1) of Se using sodium selenate. The experiment was performed in two periods: depletion (14 days) and repletion (21 days), according to the Association of Official Analytical Chemists. After five weeks, the rats were sacrificed under carbon dioxide, and blood was drawn by heart puncture. Blood plasma was separated by centrifugation. The total Se concentration in the plasma of rats fed with enriched mushrooms was higher than in rats fed with a normal diet containing sodium selenate. The plasma protein profiles were obtained using size exclusion chromatography (SEC) and UV detectors. Aliquots of effluents (0.5 mL per minute) were collected throughout in the end of the chromatographic column. However, Se was determined by graphite furnace atomic absorption spectrometry (GF AAS) only in the aliquots where proteins were detected by SEC-UV. The plasma protein profile of rats fed with different diets was similar. The highest Se concentration was observed in a peptide presenting 8 kDa. Furthermore, the higher Se concentration in this peptide was obtained for rats fed with a diet using enriched mushrooms (7 μg L(-1) Se) compared to other diets (2-5 μg L(-1) Se). These results showed that Se-enriched mushrooms can be considered as an alternative Se food source for humans, due to their high bioavailability. |
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Authors:
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Marliane C S da Silva; Juliana Naozuka; Pedro V Oliveira; Maria C D Vanetti; Denise M S Bazzolli; Neuza M B Costa; Maria C M Kasuya |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-01-07 |
Journal Detail:
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Title: Metallomics : integrated biometal science Volume: 2 ISSN: 1756-591X ISO Abbreviation: Metallomics Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-11-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101478346 Medline TA: Metallomics Country: England |
Other Details:
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Languages: eng Pagination: 162-6 Citation Subset: IM |
Affiliation:
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Departamento de Microbiologia, Universidade Federal de Viçosa,, Viçosa, Minas Gerais, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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