Novel static magnetic field effects on green chemistry biosynthesis of silver nanoparticles in Saccharomyces cerevisiae

Abstract

The bacteriocidal properties of silver nanoparticles (AgNPs) depend on their average diameter (toxicity increases with decreasing diameter). In the present work, we describe novel green chemistry biosynthesis of AgNPs from AgNO3 added to cell-free culture medium of baker’s yeast, Saccharomyces cerevisiae, yielding nanoparticles in the range 11–25 nm. However, when yeast was grown in a moderate static magnetic field, AgNPs obtained from the resulting cell-free culture medium, were significantly smaller (2–12 nm) than those obtained without magnetic field. These latter nanoparticles were highly crystalline, stable and near-uniform shape. Furthermore, the antibacterial activity of AgNPs obtained from static magnetic fields were greater than those from control cultures. Static magnetic fields show a promising ability to generate biocidal nanoparticles via this novel green chemistry approach.

Design rules applied to silver nanoparticles synthesis: A practical example of machine learning application.

“… the use of external fields such as electric, magnetic or ultrasound. AgNPs with desired size and morphology can be produced by adjusting the applied voltage and deposition duration [33] , [34] . the use of natural or biological materials as reducing agents or stabilizers in green synthesis methods can introduce unique properties due to synergistic interactions [35] .…”

“…the use of external fields such as electric, magnetic or ultrasound. AgNPs with desired size and morphology can be produced by adjusting the applied voltage and deposition duration [33] , [34] .…”

Biomimetic green synthesis of ZnO nanoflowers using α-amylase: from antimicrobial to toxicological evaluation

“…However, among these methods, green synthesis stands out as a superior approach since physical and chemical methods have traditionally depended on the use of hazardous chemicals and substantial energy inputs, which are environmentally undesirable. Green synthesis utilizes natural sources such as enzymes, plant extracts, microbes, or biocompatible agents for synthesis 11 – 13 . Utilizing biomolecules and plant extracts to synthesize nanoflowers ensures environmentally friendly procedures and introduces biocompatibility, a vital aspect for biomedical applications 14 , 15 .…”

Biogenic Silver Nanoparticles Produced by Bacteria Isolated from University Campus Environment Soil Samples in Ras Al Khaimah

“…This is characterized by FTIR, TEM, and UV-Vis analysis. After synthesis, it has been tested to analyze activity that is anti-bacterial on bacterial strains that are both gram-negative and gram-positive that lead to diseases in humans (Kthiri et al, 2021).…”