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Table 4 Minimal inhibitory concentration (MIC) of the studied spice extracts and CHL on the studied bacterial species.

From: Antibacterial activities of selected Cameroonian spices and their synergistic effects with antibiotics against multidrug-resistant phenotypes

  Tested samples and MIC in μg/ml in the absence and presence of PAßN (in parenthesis)
Bacterial strains F .
xanthoxyloides
D .
glomerata
A .
citratum
B. cinnamomea E .
giganteus
M .
whitei
S .
melongena
O .
subscorpioidea
P .
capense
X .
aethiopica
S. zenkeri CHL
E. coli            
ATCC8739 - (1024) 1024 (512) 1024 (256) - (256) - (-) - (1024) - (128) - (-) - (512) - (512) - (-) 4 (< 2)
ATCC10536 1024 512 (128) 1024 1024 1024 1024 - 512 256 64 256 < 2 (< 2)
AG100 256 512 (256) 1024 (1024) 1024 (1024) 1024 (1024) 1024 (-) 1024 (-) 512 (-) - (1024) 1024 (1024) - (-) 8 (< 2)
AG100A 1024 1024 (256) 1024 1024 1024 - - 1024 1024 - - < 2 (< 2)
AG100ATET - 1024 (512) 1024 512 1024 - - - 1024 1024 - 64 (< 2)
AG102 1024 512 (256) 1024 512 1024 - - 1024 1024 1024 - 32 (< 2)
MC4100 256 256(< 8) 512 256 512 1024 1024 1024 1024 1024 - 32
W3110 - (512) 256 (< 8) 512 (< 8) 1024 (< 8) 1024 (1024) 1024 (512) - 512 (512) 1024 (1024) - (-) - (-) 4 (< 2)
E. aerogenes -            
ATCC13048 - 512 (512) 1024 512 - - - - - - - 8 (< 2)
CM64 - (-) 512 (512) - (1024) 1024 (1024) 1024 (1024) 1024 (-) - (-) - (-) - (-) - (-) - (-) 256 (8)
EA3 1024 1024 (1024) - 1024 - - - 1024 1024 - - - (128)
EA27 1024 512 (256) 1024 1024 1024 1024 - 512 1024 1024 - 256 (< 2)
EA289 - 1024 (1024) 1024 512 1024 - - - - - - - (64)
EA298 - 1024 (128) - 1024 - 1024 - 256 512 1024 128 64 (< 2)
EA294 256 128 512 64 256 - 1024 256 256 256 512 8
E. cloacae            
ECCI69 512 (-) 1024 (1024) 1024 (1024) 1024 (512) 1024 (-) - (-) - (-) - (-) - -(1024) - (256) - (16)
BM47 1024 (1024) 1024 (256) 1024 (1024) 1024 (1024) 1024 (-) - (-) - (-) - (-) 512(64) 1024(1024) - (-) - (< 2)
BM67 1024 (1024) 1024 (128) 1024 1024 - - - - 512 1024 - 256 (16)
K. pneumoniae            
ATCC11296 1024 (1024) 512 (128) 512 (512) 256 (256) 1024 (256) - (1024) - (1024) 1024 (512) 1024 (256) - (-) - (-) 4 (< 2)
KP55 1024 512 (256) 1024 512 - - - 1024 1024 - - 64 (2)
KP63 1024 512 (< 8) 256 512 512 1024 512 256 256 64 - 64 (< 2)
K24 512 512 (32) 512 256 32 1024 1024 - 1024 - - 16 (< 2)
K2 - 1024 (128) - 1024 - - - 1024 512 - - 32 (4)
P. stuartuii            
NEA16 1024 512 (32) 128 256 1024 1024 1024 512 256 512 1024 32 (8)
ATCC29914 1024 1024 (512) 512 512 1024 1024 - - 1024 - - 16 (8)
PS2636 - 512 1024 1024 - - - - - - - 32
PS299645 1024 (-) 256 (256) 256 256 (512) - (-) - (-) - (512) - (-) - (-) - (-) - (-) 32 (< 2)
P. aeruginosa            
PA01 - 1024 (512) 1024 1024 - - - - - 1024 - 16 (< 2)
PA124 - 512 (512) - 1024 - 1024 - - - - - 32 (< 2)
  1. (-): MIC not detected at up to 1024 μg/ml for the les extracts and 256 μg/ml for CHL. (): values in parenthesis are MIC of substance in the presence of PAßN at 30 μg/ml. The MIC of PAßN was 64 μg/ml on E. coli, AG100A, 512 μg/ml on ATCC11296, BM67, EA27, EA289; 1024 μg/ml on AG100ATET, ATCC13048, CM64; and > 1024 μg/ml on other bacteria. CHL: chloramphénicol