Table 3.

Change of inhibition of Escherichia coli and Staphylococcus aureus with the concentration of AgNPs

Concentration of AgNPs	2 µg/ml	4 µg/ml	6 µg/ml	8 µg/ml
Inhibition zone of Escherichia coli (mm)	0.5	0.7	0.9	1.2
Inhibition zone of Staphylococcus aureus (mm)	0.7	0.9	1.1	1.5