Biosynthesis of silver nanoparticles using Saccharomyces cerevisiae

Abstract

The objectives of this study were the biosynthesis of silver nanoparticles (NPs) by biotransformations using Saccharomyces cerevisiae and analysis of the sizes and shapes of the NPs produced. Dried and freshly cultured S. cerevisiae were used as the biocatalyst. Dried yeast synthesized few NPs, but freshly cultured yeast produced a large amount of them. Silver NPs were spherical, 2–20 nm in diameter, and the NPs with the size of 5.4 nm were the most frequent ones. NPs were seen inside the cells, within the cell membrane, attached to the cell membrane during the exocytosis, and outside of the cells.

Keywords::

• biosynthesis
• biotransformation
• nanoparticle synthesis
• Saccharomyces cerevisiae
• silver nanoparticles
• synthesis location

Declaration of interest

The authors report no declarations of interest. The authors alone are responsible for the content and writing of the paper.

This work was supported by Isfahan University of Medical Sciences and Isfahan strategic new technologies headquarters.