Table 5.

Antibacterial activity of QACs with different alcohols against biofilms.

Compositions	MIC/MBC (mg/L)
	Reference Strains					Clinical Strains
	Sa	Ec	Kp	Ab	Pa	Sa	Ec	Kp	Ab	Pa
PhE 1: n = 9, Br	2	8	16	250	63	4	4	63	125	63
	2	16	32	250	63	4	4	63	125	125
PhE 2: n = 10, Br	1	4	32	63	32	4	8	63	32	32
	2	16	63	250	63	4	16	63	125	250
PhE 3: n = 10, Br	2	16	16	125	63	4	1	63	32	32
	2	32	63	500	250	8	16	125	125	125
PhE BAC	16	16	32	32	125	8	16	32	32	63
	16	16	32	32	125	32	16	32	32	125
PhE OCT	1	4	8	16	16	2	4	16	16	16
	4	8	16	32	63	4	16	32	32	32
PhE/H2O (control)	32	16	63	63	125	63	32	63	63	32
	63	32	125	250	125	125	63	125	125	125
IPA 1: n = 9, Br	2	4	8	32	16	2	4	8	32	16
	8	4	8	63	32	8	4	8	63	32
IPA 2: n = 10, Br	4	4	16	32	16	4	4	16	16	32
	8	4	32	32	32	8	4	63	32	32
IPA 3: n = 10, Br	2	4	8	32	16	1	4	16	16	16
	4	4	16	32	32	2	4	32	16	63
IPA BAC	16	16	32	32	125	16	16	32	32	63
	16	16	32	32	125	32	16	32	32	125
IPA OCT	2	4	4	16	8	2	4	16	16	16
	2	8	8	32	32	4	4	32	32	32
IPA/H2O (control)	32	16	63	63	125	63	32	63	63	32
	63	32	63	250	125	125	63	125	250	125
IPAP 1: n = 9, Br	1	4	8	32	16	2	1	16	32	16
	2	4	16	63	63	4	4	32	32	63
IPAP 2: n = 10, Br	1	8	16	32	32	2	8	32	32	32
	2	32	63	125	63	4	8	63	63	125
IPAP 3: n = 10, Br	4	16	16	32	16	2	2	32	32	16
	4	16	16	63	63	4	4	32	63	63
IPAP BAC	16	1	32	32	125	16	1	32	32	63
	16	2	32	63	250	32	8	32	32	500
IPAP OCT	1	2	8	8	16	2	2	16	16	16
	4	4	8	16	63	4	8	16	32	125
IPAP/H2O (control)	32	16	63	63	125	32	32	63	63	32
	63	32	63	125	125	125	63	125	125	125

Note: color indicates results that do not differ (or worse) from those of individual substances or control samples, i.e., formulation is not effective.