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Table 1 Minimal inhibitory and bactericidal concentration and dehydrogenase activity of MeOH extract and its fractions from G. urbanum

From: Antimicrobial and antioxidant potential of different solvent extracts of the medicinal plant Geum urbanum L.

Test-bacteria Parameters Extracts/fractions Control
MeOH Petroleum ether EtOAc n-BuOH
Aerial parts Roots Aerial parts Roots Aerial parts Roots Aerial parts Roots
S. aureus
NBIMCC 3359
MIC (mg/ml) 0.625 2.5 2.5** 2.5 0.078 0.156 0.156 1.25 Gentamicin (mg/L) 0.0312
DEHAa activity (%)
± STD
8.8 ± 2.2 20 ± 7.6 15 ± 1.0 15.8 ± 1.1 20.8 ± 2.2 47.5 ± 2.4 58.6 ± 3.4 47.9 ± 3.2
MBC (mg/ml) > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5
S. aureus
ATCC 6538 P
MIC (mg/ml) 0.625 2.5 1.25 1.25 0.313 1.25 0.313 0.625 Gentamicin (mg/L) 0.125
DEHA activity (%)
± STD
2.6 ± 0.6 54.1 ± 2 14 ± 1.0 15 ± 1.0 21.5 ± 2.6 34.9 ± 2.7 41 ± 0.09 42.2 ± 5.7
MBC (mg/ml) > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5
Methicillin resistant
S. aureus
NBIMCC 8327
MIC (mg/ml) 2.5 > 2.5 > 2.5 0.313 0.039 0.313 0.156 0.156 Gentamicin (mg/lL) 0.125
DEHA activity (%)
± STD
28.1 ± 0.1 4.2 ± 0.3 16.6 ± 1.1 6.9 ± 0.4 40.6 ± 2.0 37 ± 0.4
MBC (mg/ml) > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5
S. epidermidis
NBIMCC 1093
MIC (mg/ml) 2.5 > 2.5 > 2.5 1.25 0.039 1.25 0.078 0.156 Gentamicin (mg/L) 0.0312
DEHA activity (%)
± STD
25.4 ± 1.9 15.23 ± 1.9 14.05 ± 2.7 47 ± 1.4 40.9 ± 7.1 38 ± 5.4
MBC (mg/ml) > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5 > 2.5
B. cereus
ATCC 9634
MIC (mg/ml) 2.5 2.5 > 2.5 2.5 0.078 0.156 0.078 0.078 Gentamicin (mg/L) 0.125
DEHA activity (%)
± STD
31 ± 0.5 39.9 ± 1.8 30.3 ± 1.3 28.9 ± 0.05 26.2 ± 1.4 45.7 ± 2.8 51.4 ± 2.4
MBC (mg/ml) > 2.5 > 2.5 > 2.5 > 2.5 0.625 0.625 > 2.5 > 2.5
DEHA activity (%)
± STD
0 1.9 ± 0.5
  1. ** 2.5 mg/ml is the higher test-concentration
  2. aDEHA (dehydrogenase) activity test refers to the enzyme NADH