Figure 8. Potential of sodium citrate and root system of intact plants of 4 day old Vigna mungo and Triticum aestivum to generate silver NPs.

1% sodium citrate (a) and root system of intact plants of V. mungo (b) and T. aestivum (c) incubated in AgNO₃ of different concentrations (mM) for 6 h, showing alteration in color and turning clear solution colloidal under sterile conditions at room temperature. UV-Vis spectra of resultant colloidal solutions formed by 1% sodium citrate (d), V. mungo (e) and T. aestivum (f).