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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.