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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
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