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Biosynthesized Silver Nanoparticles from Brown Seaweeds Padina tetrastromatica and Sargassum wightii as Potential Antimicrobial Agents
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Abstract
In this study, silver nanoparticle (AgNPs) was synthesized using
Padina tetrastromatica
and
Sargassum wightii
and evaluated for antibacterial, antimycobacterial, anti-oxidant and cytotoxicity properties. Characterization was performed using UV-visible spectrometry, FTIR, HR-TEM, and STEM-EDX. UV spectra showed absorption peaks at 450nm (
P. tetrastromatica
) 430 nm (
S. wightii)
, While FT-IR indicated the role of algal metabolites as reducing and capping agents. TEM and SEM analyses revealed predominantly spherical nanoparticles ranging from 60-70nm. The AgNPs exhibited significance antibacterial activity against
Escherichia coli, Enterococcus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Staphylococcous aureus
. Anti-mycobacterial testing against
Mycobacterium
smegmatis showed IC50 values 31.25 µg/ml (
S. wightii
) and 6.25 µg/ml (
P. tetrastromatica
) indicating potent activity. Brine shrimp lethality assays confirmed low toxicity suggested therapeutic safety. These finding highlight the significant of marine algae-derived AgNPs as a potential therapeutic compound to combating the pathogenic bacterial and mycobacteria.
Springer Science and Business Media LLC
Title: Biosynthesized Silver Nanoparticles from Brown Seaweeds Padina tetrastromatica and Sargassum wightii as Potential Antimicrobial Agents
Description:
Abstract
In this study, silver nanoparticle (AgNPs) was synthesized using
Padina tetrastromatica
and
Sargassum wightii
and evaluated for antibacterial, antimycobacterial, anti-oxidant and cytotoxicity properties.
Characterization was performed using UV-visible spectrometry, FTIR, HR-TEM, and STEM-EDX.
UV spectra showed absorption peaks at 450nm (
P.
tetrastromatica
) 430 nm (
S.
wightii)
, While FT-IR indicated the role of algal metabolites as reducing and capping agents.
TEM and SEM analyses revealed predominantly spherical nanoparticles ranging from 60-70nm.
The AgNPs exhibited significance antibacterial activity against
Escherichia coli, Enterococcus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Staphylococcous aureus
.
Anti-mycobacterial testing against
Mycobacterium
smegmatis showed IC50 values 31.
25 µg/ml (
S.
wightii
) and 6.
25 µg/ml (
P.
tetrastromatica
) indicating potent activity.
Brine shrimp lethality assays confirmed low toxicity suggested therapeutic safety.
These finding highlight the significant of marine algae-derived AgNPs as a potential therapeutic compound to combating the pathogenic bacterial and mycobacteria.
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