Table 2. All Experiments Were Replicated Three Times with Their Mean Values ± Standard Deviations.

	zone of inhibition (mm)
	gram-positive		gram-negative
TiO2-LPE NP concentrations	E. coli	K. pneumonia	B. subtilis	S. aureus
20 ug/ml	5 ± 3	13 ± 1	12 ± 3	6 ± 1
50 ug/ml	10 ± 1	17 ± 2	14 ± 2	13 ± 2
80 ug/ml	20 ± 0	21 ± 1	19 ± 2	21 ± 1
DMSO	0	10 ± 2	0	9 ± 2
tetracycline	30 ± 1	30 ± 3	33 ± 2	10 ± 1