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Table 2 MICs and MBCs (in μg/mL) of methanol extracts from the studied plants and chloramphenicol

From: Antibacterial activities of Fagara macrophylla, Canarium schweinfurthii, Myrianthus arboreus, Dischistocalyx grandifolius and Tragia benthamii against multi-drug resistant Gram-negative bacteria

Bacterial strains Tested samples, MIC and MBC (in bracket) values
Fagara macrophylla Canarium schweinfurthii Myrianthus arboreus Dischistocalyx grandifolius Tragia benthamii Reference drug
B L B B L WP WP CHL
Escherichia coli
 ATCC10536 256 (–) 64 (1024) 512 (–) 512 (–) 512 (–) 1024 (–) 1024 (1024) 16 (32)
 W 3110 1024 (–) 1024 (–) 512 (–) 1024 (–) 64 (128)
 MC4100 1024 (–) 512 (–) 128 (512) 1024 (–) 512 (–) 1024 (–) 128 (128)
 AG100 A 1024 (–) 256 (1024) 1024 (–) 1024 (–) 64 (64)
 AG100Atet 512 (–) 1024 (–) 1024 (–) 256 (–) 1024 (–) 512 (–) 64 (128)
 AG102 256 (1024) 512 (–) 512 (–) 512 (–) 256 (–) 64 (128)
 AG100 512 (–) 512 (1024) 1024 (1024) 1024 (–) 256 (–) 16 (64)
Enterobacter aerogenes
 ATCC13048 1024 (–) 1024 (–) 1024 (–) 256 (–) 8 (32)
 EA294 1024 (–) 1024 (–) 512 (1024) 256 (–) 1024 (–) 16 (128)
 CM64 1024 (–) 1024 (–) 1024 (–) 1024 (–) 128 (–)
 EA298 1024 (–) 1024 (–) 512 (–) 1024 (–) 256 (–)
 EA27 64 (512) 256 (512) 512 (–) 128 (1024) 256 (–) 512 (–) 256 (1024)
 EA289 512 (–) 1024 (–) 256 (–)
 EA3 1024 (–) 1024 (–) 512 (–) 512 (–) 512 (–) 1024 (–)
Klebsiella pneumoniae
 ATCC11296 1024 (–) 1024 (–) 1024 (–) 1024 (–) 8 (256)
 KP55 1024 (–) 512 (–) 1024 (–) 512 (–) 512 (–) 32 (128)
 KP63 256 (1024) 512 (–) 32 (512) 128 (512) 256 (512) 512 (–) 1024 (–) 128 (–)
 K2 1024 (–) 512 (–) 512 (–) 512 (–) 512 (–) 64 (256)
 K24 1024 (–) 512 (–) 1024 (–) 1024 (–) 32 (256)
Pseudomonas aeruginosa
 PA01 128 (–)
 PA124 1024 (–) 256 (–)
Providencia stuartii
 ATCC29916 1024 (–) 1024 (–) 1024 (–) 512 (–) 256 (–) 512 (–) 1024 (–) 16 (32)
 PS2636 1024 (–) 1024 (1024) 256 (–) 512 (1024) 1024 (–) 32 (32)
 PS299645 1024 (–) 1024 (–) 512 (–) 32 (256)
 NEA16 512 (1024) 1024 (–) 512 (–) 256 (1024) 512 (–) 256 (–) 256 (512) 256 (–)
Enterobacter aerogenes
 BM47 1024 (–) 512 (–) 1024 (–) 256 (–)
 ECCI69 512 (1024) 1024 (–) 1024 (–)
 BM67 1024 (–) 1024 (–) 256 (–)
  1. (–): >1024 µg/mL for plants’ extracts and >256 µg/mL for chloramphenicol (CHL). In italics: significant activity (Kuete 2010; Kuete and Efferth 2010)
  2. Ec Escherichia coli, Ea Enterobacter aerogenes, Kp Klebsiella pneumoniae, Pa Pseudomonas aeruginosa, Ps Providencia stuartii, Ecl Enterobacter cloacae, B bark extract, L leaves extract, WP whole plant extract