Shortening the sulfur cell cycle by a green approach for bio-production of extracellular metalloid-sulfide nanoparticles.

Autor: Asghari-Paskiabi F; Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.; Department of Mycology, Pasteur Institute of Iran, Tehran, 1316943551, Iran., Imani M; Novel Drug Delivery Systems Department, Iran Polymer and Petrochemical Institute, P.O. Box 14975-112, Tehran, Iran. M.Imani@ippi.ac.ir.; Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran. M.Imani@ippi.ac.ir., Rafii-Tabar H; Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran., Nojoumi SA; Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.; Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran., Razzaghi-Abyaneh M; Department of Mycology, Pasteur Institute of Iran, Tehran, 1316943551, Iran. mrab442@yahoo.com.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Mar 23; Vol. 13 (1), pp. 4723. Date of Electronic Publication: 2023 Mar 23.
DOI: 10.1038/s41598-023-31802-6
Abstrakt: In the present study, a new approach was introduced regarding the extracellular synthesis of selenium sulfide micro/nano-particles using Saccharomyces cerevisiae in different ammonium sulfate supplementation and in the presence of sodium selenosulfate precursors (S 1 ) and a blend of selenous acid and sodium sulfite (S 2 ). In S 1 , only cell supernatant exposed to ammonium sulfate was able to reduce sodium selenosulfate. Whereas, in S 2 , cell supernatant in both pre-conditions of with or without ammonium sulfate (S 2  + or S 2 -) were able to reduce selenous acid and sodium sulfite. Electron microscopy, also indicated that selenium sulfide NPs were successfully synthesized with average size of 288 and 332 nm for S 2  + and S 2 - in SEM and 268 and 305 nm in TEM. Additionally, elemental mapping by energy-dispersive x-ray analysis confirmed the presence of sulfur/selenium elements in the particles in a proportion of 24.50 and 23.31 for S 2 - and S 2  + , respectively. The mass spectrometry indicated the probability of Se 2 S 2 , SeS 1.1 , Se 2 , Se, SeS 5 , SeS 3 , Se 3 S 5 /Se 5 , Se 3 /SeS 5 , Se 6 , Se 4 /SeS 7 , Se 2.57 S 5.43 /Se 2 S 2 and Se 4 S/Se 2 S 6 molecules for S 2  + and of Se, Se 2 , Se 3 S 5 /Se 5 , Se 6 and Se 4 species for S 2 -. In FTIR spectra, primary (i.e. 1090-1020 and 1650-1580 cm -1 ) and secondary (1580-1490 cm -1 ) amine bands duly confirmed the protein corona around the NPs.
(© 2023. The Author(s).)
Databáze: MEDLINE
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