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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018027343
pages 901-907

Bioaccumulation of Lithium (Li2CO3) in Mycelia of the Culinary-Medicinal Oyster Mushroom, Pleurotus ostreatus (Agaricomycetes)

Maria Graciela Iecher Faria
Laboratory of Molecular Biology, Postgraduate Program of Biotechnology Applied to Agriculture, Paranaense University, Umuarama, PR, Brazil
Juliana Silveira do Valle
Laboratory of Molecular Biology, Postgraduate Program of Biotechnology Applied to Agriculture, Paranaense University, Umuarama, PR, Brazil
Ana Daniela Lopes
Laboratory of Molecular Biology, Postgraduate Program of Biotechnology Applied to Agriculture, Paranaense University, Umuarama, PR, Brazil
Affonso Celso Gonçalves Jr.
Laboratory of Environmental Chemistry, Centre of Agricultural Science, West Paraná State University, Marechal Cândido Rondon, PR, Brazil
Douglas Cardoso Dragunski
Center of Engineering and Exact Sciences, West Paraná State University, Toledo, PR, Brazil
Nelson Barros Colauto
Laboratory of Molecular Biology, Postgraduate Program of Biotechnology Applied to Agriculture, Paranaense University, Umuarama, PR, Brazil
Giani Andrea Linde
Laboratory of Molecular Biology, Postgraduate Program of Biotechnology Applied to Agriculture, Paranaense University, Umuarama, PR, Brazil

RÉSUMÉ

Pleurotus ostreatus is a white-rot mushroom that bioaccumulates metals in basidiocarps and vegetative mycelia. This fungus has been used in soil and water bioremediation of several heavy metals; however, there are few studies of lithium mycelial bioaccumulation for pharmacological use. The aim of this study was to evaluate lithium bioaccumulation in P. ostreatus mycelia grown in a liquid malt extract cultivation medium with Li2CO3 or LiCl. Each lithium source was added to the medium to obtain a concentration of 0, 5, 10, 15, 20, 25, 30, 40, 50, 100, or 200 mg · L-1 lithium. The highest bioaccumulation of lithium in mycelia was 1575.29 μg · g-1 upon treatment with 40 mg · L-1 Li2CO3. P. ostreatus mycelia produce biomass and bioaccumulate both lithium sources, but more lithium bioaccumulates when in the form of Li2CO3. This study provides a prospective for the development of biotechnological products with high aggregate values and alternative ways to deliver lithium and eventually other salts for pharmacological use.


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