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Table 1 Extract yield, Minimal Inhibitory Concentration (MIC) with standard deviation and Total Antibacterial Activity (TAA) of the nine selected acetone leaf extracts against Gram-negative test bacteria

From: The antibacterial activity of extracts of nine plant species with good activity against Escherichia coli against five other bacteria and cytotoxicity of extracts

  

Escherichia coli

Salmonella Typhimurium

Pseudomonas aeruginosa

Plants

% yield

MIC (mg/ml)

TAA (ml/g)

MIC (mg/ml)

TAA (ml/g)

MIC (mg/ml)

TAA (ml/g)

Hypericum roeperianum

12.0

0.13 ± 0.04

922.82

0.26 ± 0.07

461.41

0.08

1499.58

Cremaspora triflora

2.02

0.05 ± 0.02

403.33

0.32 ± 0.25

63.02

0.16

126.04

Heteromorpha arborescens

2.60

0.18 ± 0.10

144.63

0.31 ± 0.00

83.98

0.16

162.71

Pittosporum viridiflorum

2.72

0.11 ± 0.04

246.97

0.22 ± 0.13

123.48

0.16

169.79

Bolusanthus speciosus

2.30

0.08 ± 0.00

287.92

0.13 ± 0.04

177.18

0.16

143.96

Calpurnia aurea

2.86

0.04 ± 0.00

715.83

0.13 ± 0.04

220.26

0.16

178.96

Maesa lanceolata

11.12

0.04 ± 0.00

2780.83

0.16 ± 0.00

695.21

0.08

1390.42

Elaeodendron croceum

9.00

0.11 ± 0.04

817.88

0.26 ± 0.07

346.03

0.08

1124.58

Morus mesozygia

1.85

0.07 ± 0.02

263.81

0.16 ± 0.11

115.42

0.08

230.83

Gentamicin

NA

0.0008

NA

0.0002

NA

0.0002

NA

Average for extracts

NA

0.09 ± 0.04

NA

0.22 ± 0.07

NA

0.12 ± 0.04

NA

  1. NA not applicable