Figure 2

The UV–Vis absorption spectra of silver nanoparticles synthesized: (a) by autoclaving different concentrations of gum ghatti solutions at 1 mM AgNO 3 concentration for 30 min; inset plot of A max versus gum concentration and (b) with 0.5% (w/v) gum ghatti solutions at 1 mM AgNO 3 concentration for different durations of autoclaving; inset plot of A max versus autoclaving time.