Table 2.

Antimicrobial activity of the methanol extracts from the 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	+	+	+	+	+	+	+	+	+	+	+	+	+
E. coli	+	+	+	+	+	+	+	+	+	+	+	+	+
P. aeruginosa	+	+	+	+	+	+	+	+	+	+	+	-	+
S. enteritidis	+	+	+	+	+	+	+	+	-	-	+	+	+
K. pneumonae	+	+	+	+	+	+	+	+	+	+	+	+	+
E. coli-O 157:H7	+	+	+	+	+	+	+	+	+	+	+	+	+
E. aerogenes	+	+	+	+	+	+	+	+	+	+	+	+	+
P. mirabilis	+	+	+	+	+	+	+	+	+	+	+	+	+
S. dysenteriae	+	+	+	+	+	+	+	+	+	+	+	+	+
P. ulgaris	+	+	+	+	+	+	+	+	+	+	+	+	+
Gram-positive bacteria
B. subtillis	+	+	+	+	+	+	+	+	+	+	+	+	+
S. epidermidis	+	+	+	+	+	+	+	+	+	+	+	-	+
S. aureus	+	+	+	+	+	-	+	-	-	-	+	-	+
L. monocytogenes	+	+	+	+	+	+	+	+	+	+	+	-	+
B. cereus	+	+	+	+	+	+	+	+	+	+	+	+	+

^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.