Pyoverdin mediated sunlight induced green synthesis of silver nanoparticles

Abstract

The objective of this work was to check the ability of a siderophore, pyoverdin, a natural iron chelating compound of bacterial origin to produce silver nanoparticles (AgNps) under sunlight.

Silver nanoparticles synthesized from Pseudomonas aeruginosa pyoverdine: Antibiofilm and antivirulence agents

“…The synthesized PVD-AgNPs have both spherical and non-spherical shapes. Previous studies reported that AgNPs generated via PVD from P. aeruginosa have a spherical [ 69 ] and face-centered cubic morphology [ 33 ]. The produced PVD-AgNPs were very stable, with a high zeta potential (−36.51 ± 0.69 mV), as shown by prior stability studies of AgNPs [ 70 ].…”

“…These biomolecules also act as a corona that surrounds the NPs, supporting their endurance and bio-compatibility [ 31 , 32 ]. In addition, the corona layer over the NPs enhances its biological effectiveness by interacting with the cell membrane, followed by internalization [ 33 ]. Hence, to control biofilm-forming microbial pathogens, if the corona is derived from the microbial species, that can help in the interaction with the cell surface of the microbial pathogen that might have similar components matching with the corona [ 32 ].…”

Novel Insights on Pyoverdine: From Biosynthesis to Biotechnological Application

“…However, the Arnow’s test gives ambiguous results with these molecules, despite bearing a catechol function. While most authors report that PVDs do not react positively to this test [ 37 , 73 ], there is no shortage of evidence that PVDs give positive results with both Csaky’s and Arnow’s assays, indicative of mixed-type siderophores [ 158 ].…”