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. 2011 Mar;27(1):31–36. doi: 10.5487/TR.2011.27.1.031

Table 4.

Minimum bactericidal 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 78.1 156.2 625 9.76 2500 625 2.44 5000 78.12 2500 >5000 1250 0.62
E. coli 78.1 78.12 312.5 78.12 2500 625 4.88 5000 156.2 2500 >5000 1250 1.25
P. aeruginosa 156.2 78.12 5000 2.44 1250 5000 39.0 >5000 156.2 5000 nt nt 0.62
S. enteritidis 312.5 156.2 625 2500 >5000 5000 5000 5000 nt nt 5000 5000 2.5
K. pneumonae 312.5 625 1250 78.12 625 5000 39 2500 78.12 2500 2500 2500 1.25
E. coli-O 157:H7 156.2 5000 2500 39 1250 >5000 4.88 2500 78.12 5000 625 5000 2.5
E. aerogenes 78.12 5000 2500 1.22 2.44 2500 2.44 1250 39 39 1250 2500 1.25
P. mirabilis 39 1250 312.5 1.22 1.22 5000 1.22 312.5 19.57 9.76 >5000 9.76 1.25
S. dysenteriae 156.2 2500 5000 2.44 1.22 5000 2.44 312.5 4.88 9.76 156.2 9.76 1.25
P. vulgaris 625 625 625 78.12 625 2500 78.1 1250 1250 78.12 39 1250 0.62
Gram-positive bacteria
B. subtillis 625 78.12 2500 39 5000 2500 625 5000 5000 >5000 500 5000 2.5
S. epidermidis 1250 78.12 5000 156.2 >5000 2500 1250 2500 2500 >5000 500 nt 2.5
S. aureus 2500 1250 >5000 1250 >5000 nt 39 nt nt nt nt nt 5
L. monocytogenes 625 625 1250 2.44 2.44 5000 19.53 2500 312.5 2500 500 nt 5
B. cereus 2500 625 625 625 1250 5000 625 2500 2500 2500 500 5000 2.5

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) , nt; not tested because the MIC was not determined.