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Table 3 MIC values of the biocides tested (mg/ ml) against different isolates compared to the in-use concentration (mg/ ml). Each result is the average of five replicates ± SD

From: Multiple drug resistance and biocide resistance in Escherichia coli environmental isolates from hospital and household settings

Environment Strain NO. Cetrimide
MIC±SD
Chloroxylenol
MIC±SD
Ethanol
MIC±SD
Iodine
MIC±SD
Household settings A126 0.2 ± 0 0.1 ± 0 55 ± 12 0.4 ± 0.2
A409-c 0.2 ± 0 0.2 ± 0 75 ± 0 0.4 ± 0.1
A410-a 0.4 ± 0.1 0.2 ± 0 55 ± 12 0.4 ± 0.2
A410-b 0.4 ± 0.1 0.1 ± 0 55 ± 12 0.4 ± 0.1
A411 0.2 ± 0 0.1 ± 0 65 ± 14 0.4 ± 0.1
A413 0.2 ± 0 0.1 ± 0 75 ± 0 0.4 ± 0.1
A414 0.2 ± 0 0.1 ± 0 55 ± 12 0.2 ± 0.2
A801 0.2 ± 0 0.2 ± 0.1 85 ± 14 0.2 ± 0.2
A814-a 0.2 ± 0 0.2 ± 0 50 ± 0 0.4 ± 0.2
A824-a 0.2 ± 0 0.1 ± 0 55 ± 12 0.4 ± 0.2
PH Hospital B107-a 0.4 ± 0.1 0.2 ± 0.1 50 ± 0 0.4 ± 0.2
B425-a 0.4 ± 0.1 0.2 ± 0.1 65 ± 14 0.4 ± 0.1
B425-b 0.4 ± 0.1 0.1 ± 0 50 ± 0 0.4 ± 0.1
B426-a 0.2 ± 0.1 0.1 ± 0 50 ± 0 0.4 ± 0.2
B475-a 0.4 ± 0.1 0.2 ± 0 65 ± 14 0.4 ± 0.1
B506-a 0.2 ± 0 0.2 ± 0 55 ± 12 0.2 ± 0.1
B705-b 0.2 ± 0 0.2 ± 0 60 ± 14 0.2 ± 0.1
JU Hospital C604 0.2 ± 0 0.2 ± 0 55 ± 12 0.4 ± 0.1
C705 0.4 ± 0.1 0.1 ± 0 50 ± 0 0.4 ± 0.1
C715-b 0.2 ± 0 0.2 ± 0 75 ± 0 0.4 ± 0.1
C906 0.2 ± 0 0.1 ± 0 55 ± 12 0.2 ± 0.1
  E. coli ATCC 0.2 ± 0 0.1 ± 0 25 ± 0 0.4 ± 0.1
  E. coli Nissle 0.2 ± 0.1 0.2 ± 0.1 50 ± 0 0.4 ± 0.1
In- use concentration of the biocides 6[22] 4–4.8* 390–710[22] 2.5–5[22]
  1. *Calculated from manufacturer’s instructions for use