Table 1.

Antibacterial activity (diameter of inhibition zone (cm)) of Schiff bases against five four different bacterial species

Comp.	Conc. μg/disc	Micrococcus luteus	Staphylococcus aureus	Staphylococcus pyogenes	Bacillus subtilis	Escherichia coli
L1H	50	9	12	11	8	10
	100	14	15	14	12	13
	200	19	19	18	17	17
L2H	50	9	8	10	9	9
	100	13	12	12	12	11
	200	16	17	15	17	14
L3H	50	12	14	13	10	11
	100	16	20	17	15	14
	200	19	24	18	19	18
Streptomycin	100	22	19	21	19	23