Gold Nanoparticles Synthesized with a Polyphenols-Rich Extract from Cornelian Cherry (Cornus mas) Fruits: Effects on Human Skin Cells

Figure 2

(a) Normalized extinction spectra of biosynthesized nanoparticles: (A) gold nanoparticles; (B) normalized UV-Vis absorption spectrum of the aqueous solution of Cornus mas (CM) extract. (b) Normalized UV-Vis absorption spectra of colloidal gold nanoparticles: before (black curve) and after the addition of cellular medium without phenol red (red curve). The spectra were recorded after 4 h of incubation.

(a)

(b)