Table 1

Tested bacteria	Mean zone of inhibition (mm) ± SD
Tested bacteria	Ginger	Black cumin	Thyme	Clove	peppermint
Gram-negative: E. coli Pseudomonas aeruginosa	15.00 ± .78^a 4.00 ± 0.18^c	2.00 ± 0.14^d 9.60 ± 0.15^a	8.00 ± .14^b 9.00 ± .12^a	2.00 ± 0.12^d 6.60 ± 0.12^b	5.00 ± .19^c 4.00 ±0.15^c
Gram-postive: Bacillus cereus Lactococcus lactis Listeria monocytogens Staphylococcus aureus	11.60 ± 0.43^a 11.00 ± 0.22^c 9.00 ± 0.18^b 5.70 ± 0.20^c	5.00 ± 0.14^e 22.30 ± 0.50^a 9.50 ± 0.22^a 9.00 ± 0.17^a	8.30 ±0.22^c 7.30 ± .15^d 9.00 ±0.23^b 0.00 ± 0.0^d	9.30 ± 0.22^b 7.60 ± 0.19^d 8.30 ± 0.21^c 0.00 ± 0.0^d	7.00 ± .10^d 16.00 ± 28^b 6.30 ± .18^d 6.33 ±0.15^b

^a,b,c,d means in the same row with different superscript differ significantly (p<0.05)

Table 1: Antibacterial activities of infusion of medicinal plants.