Biomineralization of Gold by Mucor Plumbeus: The Progress in Understanding the Mechanism of Nanoparticles’ Formation
Irena Maliszewska , Włodzimierz Tylus , Jacek Chęcmanowski , Bogdan Szczygieł , Izabela Pawlaczyk-Graja , Wojciech Pusz , Anna Baturo-Cieśniewska
AbstractThis contribution describes the deposition of gold nanoparticles by microbial reduction of Au(III) ions using the mycelium of Mucor plumbeus. Biosorption as the major mechanism of Au(III) ions binding by the fungal cells and the reduction of themto the form of Au(0) on/in the cell wall, followed by the transportation of the synthesized gold nanoparticles to the cytoplasm, is postulated. The probable mechanism behind the reduction of Au(III) ions is discussed, leading to the conclusion that this process is nonenzymatic one. Chitosan of the fungal cell wall is most likely to be the major molecule involved in biomineralization of gold by the mycelium of M. plumbeus. Separation of gold nanoparticles from the cells has been carried out by the ultrasonic disintegration and the obtained nanostructures were characterized by UV-vis spectroscopy and transmission electron micrograph analysis.
|Journal series||Biotechnology Progress, ISSN 8756-7938, (A 30 pkt)|
|Keywords in English||mineralization; gold; nanoparticles; reduction; fungi|
|Score||= 30.0, 23-06-2020, ArticleFromJournal|
|Publication indicators||= 0; = 1; : 2017 = 0.785; : 2017 = 1.947 (2) - 2017=2.018 (5)|
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