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Biogenic silver nanoparticles production and characterization from native stain of Corynebacterium species and its antimicrobial activity

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ABSTRACT

In the present study, synthesis, characterization, and the antibacterial activity of silver nanoparticles from native isolate of Corynebacterium glutamicum has been reported. Silver nanoparticles were synthesized by challenging the dried biomass of C. glutamicum with aqueous diamine silver ([Ag (NH3)2]+) containing 1 mM AgNO3. Synthesized silver nanoparticles (AgNPs) were characterized by ultraviolet–visible spectroscopy and energy-dispersive X-ray (EDX) spectroscopy analysis. Morphological study of silver nanoparticles was carried out using transmission electron microscopy (TEM) and scanning electron microscope (SEM). The spherical morphology of silver nanoparticles was confirmed from SEM image. The TEM image showed the average particle size of silver nanoparticles was about 15 nm. Silver nanoparticles synthesized from C. glutamicum were found to have enhanced antimicrobial activity against selected pathogenic strains. Silver nanoparticles from pure strains of Corynebacterium species was done by many investigators, but as per the present literature, this is the first report on the production of silver nanoparticles using a native strain of Corynebacterium.

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TEM image of synthesized AgNPs
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Fig3: TEM image of synthesized AgNPs

Mentions: The well-known technique for imaging solid materials at atomic resolution is TEM. The technique was employed to visualize the size and shape of Ag nanoparticles. From the results, it is observed that most of the Ag nanoparticles were spherical in shape. Figure 3 shows the TEM image of individual silver nanoparticles with the mean particle size estimated as 15 nm.Fig. 3


Biogenic silver nanoparticles production and characterization from native stain of Corynebacterium species and its antimicrobial activity
TEM image of synthesized AgNPs
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4362738&req=5

Fig3: TEM image of synthesized AgNPs
Mentions: The well-known technique for imaging solid materials at atomic resolution is TEM. The technique was employed to visualize the size and shape of Ag nanoparticles. From the results, it is observed that most of the Ag nanoparticles were spherical in shape. Figure 3 shows the TEM image of individual silver nanoparticles with the mean particle size estimated as 15 nm.Fig. 3

View Article: PubMed Central

ABSTRACT

In the present study, synthesis, characterization, and the antibacterial activity of silver nanoparticles from native isolate of Corynebacterium glutamicum has been reported. Silver nanoparticles were synthesized by challenging the dried biomass of C. glutamicum with aqueous diamine silver ([Ag (NH3)2]+) containing 1 mM AgNO3. Synthesized silver nanoparticles (AgNPs) were characterized by ultraviolet–visible spectroscopy and energy-dispersive X-ray (EDX) spectroscopy analysis. Morphological study of silver nanoparticles was carried out using transmission electron microscopy (TEM) and scanning electron microscope (SEM). The spherical morphology of silver nanoparticles was confirmed from SEM image. The TEM image showed the average particle size of silver nanoparticles was about 15 nm. Silver nanoparticles synthesized from C. glutamicum were found to have enhanced antimicrobial activity against selected pathogenic strains. Silver nanoparticles from pure strains of Corynebacterium species was done by many investigators, but as per the present literature, this is the first report on the production of silver nanoparticles using a native strain of Corynebacterium.

No MeSH data available.