Skip to main content

Table 1 Minimum inhibitory concentration (MIC) and total antibacterial activity (TAA) and selectivity index (SI) of the nine selected acetone leaf extracts against Stenotrophomonas maltophilia, Klebsiella sp. and Salmonella serotype Typhimurium (AJ 33)

From: Potency and selectivity indices of acetone leaf extracts of nine selected South African trees against six opportunistic Enterobacteriaceae isolates from commercial chicken eggs

  Stenotrophomonas maltophilia Klebsiella pneumoniae Salmonella ser. Typhimurium (AJ 33)
Plants MIC (mg/ml) TAA (ml/g) SI MIC (mg/ml) TAA (ml/g) SI MIC (mg/ml) TAA (ml/g) SI
H. roeperianum 0.16 749.8 0.41 0.16 749.8 0.41 0.31 387.0 0.21
C. triflora 0.08 252.1 0.72 0.08 252.1 0.72 0.08 252.1 0.72
H. arborescens 0.08 325.4 1.01 0.16 162.7 0.51 0.16 162.7 0.51
P. viridiflorum 0.08 339.6 0.68 0.16 169.8 0.34 0.16 169.8 0.34
B. speciosus 0.31 74.3 0.17 0.16 144.0 0.33 0.63 36.6 0.08
C. aurea 0.16 179.0 0.09 0.08 357.9 0.17 0.16 179.0 0.09
M. lanceolata 0.08 1390.4 0.03 0.63 176.6 0* 0.16 695.2 0.01
E. croceum 0.08 1124.6 0.07 0.31 290.2 0.02 0.31 290.2 0.02
M. mesozygia 0.16 115.4 0.25 0.08 230.8 0.51 0.31 59.6 0.13
Mean 0.13 NA NA 0.2 NA NA 0.25 NA NA
SD 0.07 NA NA 0.17 NA NA 0.16 NA NA
Gentamicin 0.0008 NA NA 0.0008 NA NA 0.006 NA NA
  1. NA Not applicable, AJ Alexander Jambalang, * 0.004
  2. The SI and TAA values of the extracts was calculated from the cytotoxicity and percentage yield of the extracts results published in Elisha et al. [12]
  3. Numbers in bold font MIC < 0.1 mg/ml