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Figure 1 | Nanoscale Research Letters

Figure 1

From: Oxidative stress mediated cytotoxicity of biologically synthesized silver nanoparticles in human lung epithelial adenocarcinoma cell line

Figure 1

Synthesis and characterization of bio-AgNPs using culture supernatant from E. coli. The inset shows tubes containing samples of silver nitrate (AgNO3) after exposure to 5 h (1), AgNO3 with the extracellular culture supernatant of E. coli (2), and AgNO3 plus supernatant of E. coli (3). The color of the solution turned from pale yellow to brown after 5 h of incubation, indicating the formation of silver nanoparticles. The absorption spectrum of AgNPs synthesized by E. coli culture supernatant exhibited a strong broad peak at 420 nm and observation of such a band is assigned to surface plasmon resonance of the particles.

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