Table 2.

MBC of compounds 11a–14c on the studied bacterial strains (mg/L)

Compound	Staphylococcus aureus (n=3)	Escherichia coli (n=4)	Bacillus subtilis (n=1)	Moraxella catarrhalis (n=2)	Streptococcus pyogenes (n=3)	Streptococcus mutans (n=2)	Streptococcus salivarius (n=2)	Enterococcus faecalis (n=2)	Campylobacter jejuni (n=2)
11a	>200	100	>200	50	200	>200	>200	>200	100
11b	>200	200	>200	200	>200	200	>200	>200	100
11c	>200	200	>200	100	150	200	200	>200	25
12a	50	>200	100	15	200	50	200	200	100
12b	200	200	>200	100	200	200	200	200	25
12c	100	200	200	50	200	100	200	200	25
13a	200	200	200	25	200	100	200	150	100
13b	200	100	100	50	200	200	150	200	100
13c	100	100	100	50	200	100	200	>200	50
14a	150	150	200	25	200	>200	200	>200	200
14b	200	150	>200	25	200	>200	200	>200	200
14c	100	200	>200	100	>200	50	200	>200	25
Nor	20	20	100	10	75	100	100	50	100

Abbreviations: MBC, minimal bactericidal concentration; n, number of strains; Nor, norfloxacin.