Abstract
This is the first study to demonstrate that the medicinal basidiomycete Lentinula edodes can reduce gold (III) ions from hydrogen tetrachloaurate (chloroauric acid) H[AuCl4] to the elementary state with the formation of spherical nanoparticles (nanospheres). When a culture was grown under submerged conditions in the presence of chloroauric acid, the appearance of an intense purple-red color of L. edodes filamentous hyphae was recorded, which indicates that gold ions were reduced to gold nanoparticles. Using transmission electron microscopy and X-ray fluorescence, we observed accumulation of colloidal gold by the fungal mycelium in the form of electron-dense nanospheres of 5 to 50 nm in diameter on the surface and inside fungal cells.
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Original Russian Text © E.P. Vetchinkina, A.M. Burov, M.V. Ageeva, L.A. Dykman, V.E. Nikitina, 2013, published in Prikladnaya Biokhimiya i Mikrobiologiya, 2013, Vol. 49, No. 4, pp. 402–408.
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Vetchinkina, E.P., Burov, A.M., Ageeva, M.V. et al. Biological synthesis of gold nanoparticles by the xylotrophic basidiomycete Lentinula edodes . Appl Biochem Microbiol 49, 406–411 (2013). https://doi.org/10.1134/S0003683813040121
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DOI: https://doi.org/10.1134/S0003683813040121