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Table 4 MIC of tested plant extracts in the absence and presence of PAβN against the studied bacterial strains

From: Antibacterial activities of Beilschmiedia obscura and six other Cameroonian medicinal plants against multi-drug resistant Gram-negative phenotypes

Bacterial strains Tested samples and MIC (μg/mL)
P. Fernandopoina(Whole plant) C. succirubia P. staudtii V. soyauxii C. biafrae(Whole plant) B. obscura(Fruits) E. giga(Leaves) CHL
Leaves S. bark Leaves S. bark Root Leaves S. bark R. bark
E. coli             
AG100ATet 1024 (512) - (-) - (-) 1024 (-) - (-) 1024 (1024) 1024 (1024) 512 (1024) 1024 (1024) - (-) 1024 (1024) - (-) 64 (≤2)
AG102 1024 (1024) - (-) - (-) 1024 (1024) - (1024) - (-) 1024 (1024) - (1024) - (-) - (-) 1024 (1024) 1024 (1024) 32 (≤2)
E. aerogenes              
CM64 - (-) - (-) - (1024) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) >256 (16)
EA289 - (-) - (-) - (-) 1024 (-) - (-) - (-) - (-) - (1024) - (-) - (-) - (-) - (1024) 128 (16)
E. cloacae             
ECCI69 1024 (1024) - (1024) - (512) - (-) - (-) - (-) - (-) - (-) - (1024) - (-) - (-) - (-) >256 (128)
K. pneumonia             
KP55 512 (512) - (-) - (-) 512 (128) 1024 (512) 512 (256) 1024 (1024) 1024 (1024) 512 (512) 1024 (-) 32 (≤8) - (-) 64 (4)
K24 1024 (1024) - (-) - (1024) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) 32 (2)
P. stuartuii             
NEA16 - (-) - (-) - (-) - (1024) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) 64 (4)
P. aeruginosa             
PA124 - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) - (-) 64 (8)
  1. (-): MIC not detected at up to 1024 μg/mL; (): MIC of samples in the presence of PAβN at 20 μg/mL. The MIC of PAβN was 128 μg/mL on E. cloacae ECCI69 and > 256 μg/mL on other bacteria.
  2. CHL: chloramphenicol.