Table 3.

Minimum inhibition concentration (μg/ml) for the methanol extracts from leaves or root of 8 medicinal plants

Microorganisms	Methanol extracts
	SK-Ra	SK-L	GJ	GS	SC-R	SC-L	AP-L	AP-R	HC-L	HC-R	PF	AR	RAb
Gram-negative bacteria
S. typhimurium	9.76	19.53	78.12	1.22	156.2	78.12	0.6	1250	4.88	312.5	1250	156.2	0.31
E. coli	9.76	9.76	78.12	9.76	312.5	78.12	0.6	1250	9.76	1250	1250	156.2	0.62
P. aeruginosa	39.0	9.76	2500	0.6	156.2	1250	4.88	2500	9.76	1250	5000	-	0.31
S. enteritidis	78.12	19.53	78.12	625	1250	1250	1250	1250	-	-	1250	1250	1.25
K. pneumoniae	78.12	78.12	78.12	4.88	39	1250	4.88	1250	9.76	312.5	312.5	156.2	0.62
E. coli-O 157:H7	19.53	1250	1250	4.88	156.2	1250	1.22	1250	9.76	1250	78.1	1250	1.25
E. aerogenes	9.76	1250	625	0.6	0.6	1250	0.6	78.12	4.88	4.88	78.1	156.2	1.25
P. mirabilis	4.88	156.2	78.12	0.6	0.6	1250	0.6	9.76	2.44	1.22	1250	1.22	0.62
S. dysenteriae	9.76	1250	625	0.6	0.6	1250	0.6	19.53	1.22	1.22	19.53	0.6	0.62
P. vulgaris	156.2	78.12	78.12	4.88	19.53	1250	9.76	156.2	156.2	9.76	4.88	156.2	0.31
Gram-positive bacteria
B. subtillis	156.2	9.76	625	4.88	1250	1250	19.53	2500	1250	1250	625	1250	0.62
S. epidermidis	312.5	9.76	1250	9.76	2500	625	78.12	1250	1250	2500	625	-	1.25
S. aureus	1250	78.12	2500	78.1	2500	-	156.2	-	-	-	5000	-	2.5
L. monocytogenes	78.12	156.2	78.12	0.6	0.6	1250	4.88	312.5	19.53	156.2	2500	-	2.5
B. cereus	1250	156.2	156.2	39	78.12	1250	78.12	1250	312.5	312.5	1250	1250	0.62

^a: SK-R; Sedum kamtschaticum root, SK-L; Sedum kamtschaticum leaf, GJ; Geum japonicum, GS; Geranium sibiricum, SC-R; Saururus chinensis root, SC-L; Saururus chinensis leaf, AP-R; Agrimonia pilosa root, AP-L; Agrimonia pilosa leaf, HC-R; Houttuynia cordata root, HC-L; Houttuynia cordata leaf, PF; Perilla frutescens, AR; Agastache rugosaia.

^b: RA; reference antibiotics (Gentamycin) , (-) : no inhibition.