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. 2014 Apr 4;14:122. doi: 10.1186/1472-6882-14-122

Table 2.

Antimicrobial activities (in terms of inhibition zone in mm) where bacterial growth was inhibited by plant extracts

Plant species
 Fractions
 Antimicrobial activity against
    B. subtilis K. pneumonia S. aureus E. coli S. typhi S. dysentriae S. cerevisiae
Calotropis procera
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 15.0 ± 0.25
 0
 14.1 ± 0.25
 125 ± 0.20
 13.6 ± 0.25
 15.2 ± 0.20
 14.4 ± 0.264
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.152
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.251
Artemisia maritima
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 12.2 ± 0.25
 12.4 ± 0.37
 15.1 ± 0.36
 12.8 ± 0.25
 13.70 ± 0.41
 14.3 ± 0.30
 15.6 ± 0.40
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Neolitsea chinensis
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 19.36 ± 0.25
 17.7 ± 0.26
 -
 14.86 ± 0.11
Ethanol
 20.1 ± 0.25
 -
 18.6 ± 0.23
 20.0 ± 0.25
 19.5 ± 0.20
 19.3 ± 0.05
 18.7 ± 0.15
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Azadirachta indica
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 22.5 ± 0.40
 -
 17.5 ± 0.30
 23.8 ± 0.20
 23.9 ± 0.05
 19.6 ± 0.15
 21.8 ± 0.11
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Cedrela toona
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 15.4 ± 0.11
 -
 13.4 ± 0.25
 14.5 ± 0.25
 -
 -
 15.2 ± 0.36
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Melia azedarach
 Aqueous
 -
 -
 13.7 ± 0.40
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 -
 -
 -
 -
 -
 -
 -
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Eucalyptus globulus
 Aqueous
 24.1 ± 0.15
 28.4 ± 0.30
 23.8 ± 0.15
 20.0 ± 0.20
 18.8 ± 0.17
 21.5 ± 0.25
 27.5 ± 0.15
n-Hexane
 14.2 ± 0.32
 14.5 ± 0.61
 12.7 ± 0.25
 14.7 ± 0.30
 13.2 ± 0.35
 15.7 ± 0.25
 15.2 ± 0.15
Ethanol
 29.36 ± 0.15
 28.73 ± 0.30
 26.96 ± 0.15
 19.36 ± 0.40
 23.6 ± 0.36
 25.86 ± 0.11
 27.16 ± 0.20
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Punica granatum
 Aqueous
 14.4 ± 0.32
 19.8 ± 0.15
 18.7 ± 0.25
 13.8 ± 0.11
 15.5 ± 0.25
 12.6 ± 0.20
 15.8 ± 0.15
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 22.5 ± 0.25
 23.2 ± 0.20
 23.8 ± 0.11
 21.5 ± 0.37
 23.8 ± 0.15
 22.6 ± 0.36
 23. 6 ± 0.20
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Nigella sativa
 Aqueous
 -
 -
 -
 -
 -
 -
 -
n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 17.5 ± 0.30
 16.0 ± 0.05
 18.9 ± 0.15
 17.5 ± 0.25
 19.7 ± 0.15
 15.8 ± 0.11
 -
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
Streptomycin
 33.4 ± 0.40
 32 ± 0.20
 34.3 ± 0.55
 35.2 ± 0.26
 36.2 + 0.10
 36 ± 1.00
 35.2 ± 0.25
Bergenia ciliata
 Aqueous
 15.4 ± 0.26
 19.5 ± 0.15
 23.7 ± 0.15
 23.5 ± 0.32
 20.0 ± 0.25
 28.6 ± 0.15
 23.8 ± 0.15
 
 n-Hexane
 -
 -
 -
 -
 -
 -
 -
Ethanol
 22.830.15
 18.6 ± 0.15
 24.0 ± 0.10
 23.7 ± 0.25
 22.8 ± 0.15
 29.4 ± 0.47
 23.4 ± 0.26
Tetracyclin
 36.2 ± 1.00
 33.6 ± 0.85
 32.7 ± 0.90
 37.4 ± 0.55
 33.8 ± 0.55
 34.5 ± 0.72
 38 ± 0.15
  Streptomycin 33.4 ± 0.40 32 ± 0.20 34.3 ± 0.55 35.2 ± 0.26 36.2 + 0.10 36 ± 1.00 35.2 ± 0.25

±: mean standard deviation of three replicates; −: no zone of inhibition.