Table 1

Inhibitory effect of AgNP and AgGO against Gram-positive and Gram-negative bacteria
Bacteria Sample concentrations (μg/ml) Control
AgNP AgGO GO
100 50 25 12.5 6.25 100 50 25 12.5 6.25 100 -
Gram-positive
S. aureus × × × × × × × × × × × ×
S. epidermidis × × × × × × × × × ×
Gram-negative
E. coli √* √* × ×
S. typhi × × ×

A check indicates positive inhibition effect with no colony growth observed. A check with an asterisk indicates positive inhibition effect with less than five colonies observed. An ex indicates negative inhibition effect.

Chook et al.

Chook et al. Nanoscale Research Letters 2012 7:541   doi:10.1186/1556-276X-7-541

Open Data