Antimicrobial activity of Syzygium aromaticum L. essential oil on extended-spectrum beta-lactamases-producing Escherichia coli

Bulletin of the National Research Centre

Table 1 Antibacterial activity of EOSA

Bacteria ESBL-E. coli	Inhibition Halos ± S.D	MIC	MBC	Inhibition Halos ± S.D
Bacteria ESBL-E. coli	S. aromaticum	MIC	MBC	Control +
ECB39	21.67 ± 0.58	20.00	40.00	28.33 ± 2.89
ECB41	25.00 ± 0.00	20.00	> 40.00	26.33 ± 1.15
ECB57	21.33 ± 1.15	20.00	40.00	21.33 ± 1.53
ECB74	27.67 ± 2.52	20.00	40.00	21.00 ± 1.00
ECB80	21.33 ± 1.15	20.00	40.00	22.67 ± 2.52
ECB86	21.00 ± 1.00	20.00	40.00	20.33 ± 2.52
ECB96	22.66 ± 0.58	20.00	40.00	6.66 ± 0.58
ECB118	25.00 ± 0.00	20.00	40.00	24.33 ± 1.15
ECB122	22.00 ± 0.00	10.00	40.00	7.00 ± 0.00
ECB123	21.00 ± 1.73	20.00	40.00	13.33 ± 0.58
ECB125	22.33 ± 0.58	20.00	> 40.00	22.00 ± 1.00
ECB126	21.33 ± 1.15	20.00	40.00	7.00 ± 0.00
ECB129	22.66 ± 0.58	20.00	40.00	24.33 ± 2.31
ECB130	26.66 ± 1.53	20.00	40.00	17.33 ± 0.58
ECB132	24.33 ± 1.15	10.00	80.00	22.33 ± 4.04
ECB133	21.00 ± 0.00	40.00	> 40.00	21.00 ± 1.00
ECB134	25.00 ± 0.00	20.00	40.00	19.33 ± 1.15

Positive control: (chloramphenicol); inhibition halos: mean data and standard deviation (S.D) (mm), MIC: minimum inhibitory concentration (mg/mL); MBC: minimum bactericidal concentration (mg/mL)