Table 1: Antibacterial activity of silver nanoparticles synthesised by chemical and biological methods.

Zone of Inhibition (mm)
Organisms Biological AgNPs Chemical AgNPs Standard
Staphylococcus aereus 25 20 21
Bacillus subtilis 24 19 21
Escherichia coli 26 20 25
Klebsiella pneumoniae 22 18 23

Source: Gudikandula and Maringanti (2016) [24].