Table 3.

Average inhibition zone (mm) of extract concentrations on pathogenic bacteria (WDA methods).

Zone of Inhibition (mm)
Microorganisms	Well Diffusion Agar
	Concentrations (mg/mL)
	50	100	200	400
Pseudomonas aeruginosa	12.15 ± 0.52 a	15.24 ± 0.12 b	18.45 ± 0.42 a	20.25 ± 0.31 b
Escherichia coli	14.31 ± 0.30 c	17.10 ± 0.13 d	20.10 ± 0.19 b	22.08 ± 0.08 c
Staphylococcus aureus	12.31 ± 0.31 a	16.10 ± 0.15 c	19.10 ± 0.11 c	19.10 ± 0.12 a
Listeria innocua	13.31 ± 0.20 b	14.10 ± 0.03 a	20.10 ± 0.12 b	20.12 ± 0.02 b

^a–c Means with different subscripts within a column significantly different at p < 0.05.