906592.fig.002a
(a)
906592.fig.002b
(b)
906592.fig.002c
(c)
906592.fig.002d
(d)
Figure 2: Effect of ABE extract with 1 mM metal salt concentration. (a) In synthesis of gold nanoparticles. (c) In synthesis of silver nanoparticles. Effect of metal ion concentration. (b) In synthesis of gold nanoparticles. (d) In synthesis of silver nanoparticles. Inset of (a) and (c), respectively, shows the change in SPR intensity over time for gold and silver nanoparticles synthesis.