Table 3.
Disk diffusion of 60% EtOH, hot water extracts from Zanthoxylum piperitum DC against target strains

Extracts	Strains	Clear zone on plate (mm)1)
		Concentration (mg/mL)
		3.1	6.25	12.5	25	50	100
		60% EtOH	E.coli O157:H7	10.502)	11.50	14.00	18.00	21.00	24.00
			E.coli	10.00	11.50	14.00	17.00	21.00	23.00
Salmonella typhimurium			10.00	12.00	14.50	17.00	21.00	24.00
Staphylococcus aureus	10.00		11.50	15.00	18.00	21.00	25.00
MRSA	10.00		12.00	15.00	17.50	21.00	23.00
Bacillus cereus	9.00		11.50	14.00	18.00	20.50	25.00
Hot water	E.coli O157:H7	8.00	8.00b	8.50c	13.50	17.50	19.501bc
	E.coli	9.50	10.00a	11.00b	14.50	17.00	19.00c
	Salmonella typhimurium	9.50	10.00a	11.25b	14.00	17.00	20.00bc
	Staphylococcus aureus	9.50	10.50a	12.50a	15.00	17.50	22.00a
	MRSA	8.75	10.50a	12.00ab	14.50	17.00	20.50b
	Bacillus cereus	8.00	8.00b	11.00b	14.00	16.50	20.00bc

Disk diameter (8 mm) was included
)Mean ± SD of duplicated experiments
significance among strains at the same concentration (p<0.05)