Antibacterial and Photocatalytic Applications of Silver Nanoparticles Synthesized from Lacticaseibacillus rhamnosus
Artículo de revista
2024-11-03
international journal of molecular sciences
Suiza
The biosynthesis of silver nanoparticles (AgNPs) presents an innovative and sustainable
approach in nanotechnology with promising applications in fields such as medicine, food safety,
and pharmacology. In this study, AgNPs were successfully synthesized using the probiotic strain
Lacticaseibacillus rhamnosus (BCRC16000), addressing challenges related to stability, biocompatibility,
and scalability that are common in conventional nanoparticle production methods. The formation of
AgNPs was indicated by a color change from yellow to brown, and UV–visible spectrophotometry
confirmed their presence with a characteristic absorption peak at 443 nm. Furthermore, Fourier
transform infrared (FTIR) spectroscopy revealed the involvement of biomolecules in reducing silver
ions, which suggests their role in stabilizing the nanoparticles. In addition, field emission scanning
electron microscopy (FE-SEM) showed significant morphological and structural changes. At the same
time, dynamic light scattering (DLS) and zeta potential analyses provided valuable insights such
as average size (199.7 nm), distribution, and stability, reporting a polydispersity index of 0.239 and
a surface charge of −36.3 mV. Notably, the AgNPs demonstrated strong antibacterial activity and
photocatalytic efficiency, underscoring their potential for environmental and biomedical applications.
Therefore, this study highlights the effectiveness of Lacticaseibacillus rhamnosus in the biosynthesis of
AgNPs, offering valuable antibacterial and photocatalytic properties with significant industrial and
scientific implications.
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