Skip to main content
. 2018 Dec 14;7(4):110. doi: 10.3390/antibiotics7040110

Table 1.

Gram-negative species with increased antibiotic tolerance after various types of low level exposure (<MIC value) to benzalkonium chloride (BAC).

Species Strain(s) MIC Increase (BAC) Antibiotic(s) MIC Increase (Antibiotic) Reference
Escherichia coli ATCC 25922 and 9 avian and porcine strains 2.6-fold Florfenicol
Cefotaxime
Chloramphenicol
Ceftazidime
Nalidixic acid
Ampicillin
Tetracycline
Ciprofloxacin
Sulfamethoxazole
Trimethoprim		 7-fold 1
6.3-fold 1
6.1-fold 1
4.8-fold 1
4.4-fold 1
4.3-fold 1
4.2-fold 1
3.8-fold 1
3.7-fold 1
3.3-fold 1 		[5]

1 microdilution method (mg/L).