Table 2.

Inhibition zones and MIC values of AgNPs, biochar, and AgNPs + biochar.

	AgNPs		Biochar		AgNPs + Biochar
Micro-Organism	Inhibition Zone (mm)	MIC µg/mL	Inhibition Zone (mm)	MIC µg/mL	Inhibition Zone (mm)	MIC µg/mL
B. cereus (ATCC 11778)	20.5 ± 0.5	6.38	0.0	Nd	24.5 ± 0.5	2.13
L. monocytogene (ATCC 7644)	18.5 ± 0.5	6.38	0.0	Nd	20.5 ± 0.0	2.13
P. aeruginosa	12.5 ± 0.5	19.15	0.0	Nd	14.5 ± 0.4	6.38
S. typhi (ATCC 14028)	15.5 ± 0.5	6.38	0.0	Nd	19.5 ± 0.6	2.13
S. aureus	18.5 ± 0.5	6.38	0.0	Nd	21.5 ± 0.5	2.13
E. coli	14.0 ± 0.0	19.15	0.0	Nd	16.5 ± 0.0	6.38
P. aeruginosa ATCC 10145	12.3 ± 0.0	19.15	0.0	Nd	16.5 ± 0.5	6.38
E. coli ATCC 25922	13.5 ± 0.6	19.15	0.0	Nd	15.0 ± 0.6	6.38
S. epidermidis	17.5 ± 0.7	6.38	0.0	Nd	19.5 ± 0.0	2.13
E. coli 0157:H7 (ATCC 43888)	14.5 ± 0.6	19.15	0.0	Nd	17.0 ± 0.6	6.38

Nd: not detected.