Table 4.

Antibacterial activity of 1–4 (105 µg/disc).

Microorganisms	Compounds and inhibition zones (mm)
	SCF	KCN	1	2	3	4
Gram-positive bacteria
S. aureus ATCC29213	29	–	18 ± 0.58	37 ± 1.0	25 ± 0.58	30 ± 1.0
B. subtilis ATCC6633	19	–	14 ± 1.53	27 ± 0.58	31 ± 1.0	34 ± 0.58
B. cereus DSM 4312	30	–	20 ± 1.0	30 ± 0.58	34 ± 0.0	36 ± 1.0
St. pyogenez ATCC176	20	–	15 ± 0.0	32 ± 0.58	29 ± 0.58	26 ± 0.0
Gram-negative bacteria
E. coli 111	21	–	19 ± 0.58	32 ± 0.0	30 ± 0.58	29 ± 0.58
E. aerogenes 2924	31	–	15 ± 1.0	22 ± 1.0	20 ± 1.0	25 ± 1.0
S. gallinarum	30	–	17 ± 0.58	35 ± 1.0	35 ± 0.58	37 ± 1.0
P. aeruginosa ATCC9027	15	–	–	30 ± 1.0	30 ± 1.0	30 ± 0.58
S. enteridis ATCC13076	22	–	18 ± 0.58	30 ± 0.58	33 ± 0.58	36 ± 1.0

SCF, sulbactam (30 µg) + cefoperazone (75 µg), as a positive control.

KCN, potassium cyanide, as a negative control.