[Biological synthesis of gold nanoparticles by the xylotrophic basidiomycete Lentinula edodes].
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.
E P
EP
Vetchinkina
A M
AM
Burov
M V
MV
Ageeva
L A
LA
Dykman
V E
VE
Nikitina
D002712:Chlorides / Q000737:chemistry*; D017612:Gold Compounds / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D025282:Mycelium / Q000254:growth & development / Q000378:metabolism*; D010084:Oxidation-Reduction; D010316:Particle Size; D020942:Shiitake Mushrooms / Q000254:growth & development / Q000378:metabolism*; D013052:Spectrometry, X-Ray Emission
D002712:Chlorides; D017612:Gold Compounds; C024568:gold tetrachloride, acid