Tristemma hirtum and Five Other Cameroonian Edible Plants with Weak or No Antibacterial Effects Modulate the Activities of Antibiotics against Gram-Negative Multidrug-Resistant Phenotypes
Table 3
Minimal inhibitory concentrations (MIC) and minimal bactericidal concentrations (MBC) of the plant extracts and chloramphenicol against bacteria strains.
Bacterial strains
Samples, MIC and MBC in μg/mL (in brackets)
Plant extracts
Antibiotic
AAS
AAL
ALL
CCP
PPS
RHP
THL
CHL
Escherichia coli
ATCC8739
2048 (-)
2048 (-)
2048 (-)
2048 (-)
2048 (-)
512 (1024)
2048 (-)
2 (8)
AG100A
1024 (2048)
1024 (-)
1024
512 (-)
2048 (-)
512 (1024)
512 (-)
32 (256)
AG100ATET
2048 (-)
1024 (-)
1024 (1024)
-
2048 (-)
1024 (-)
-
8 (128)
AG102
-
-
-
-
-
-
-
32 (-)
W3110
1024 (-)
1024 (-)
1024 (1024)
1024 (-)
-
1024 (2048)
1024 (-)
2 (8)
MC4100
1024 (-)
1024 (-)
1024 (-)
512 (-)
2048 (-)
1024 (-)
512 (-)
2 (8)
Enterobacter aerogenes
ATCC13048
1024 (-)
1024 (-)
1024 (-)
2048 (-)
2048 (-)
1024 (-)
2048 (-)
2 (8)
EA289
-
-
-
2048 (-)
-
-
2048 (-)
128 (128)
EA294
1024 (2048)
1024 (2048)
1024 (2048)
2048 (-)
-
512 (-)
2048 (-)
2 (8)
EA27
2048
-
-
2048 (-)
-
-
2048 (-)
64 (2)
CM64
-
-
-
-
-
-
-
16 (-)
Klebsiella pneumoniae
ATCC11296
-
1024 (-)
1024 (-)
1024 (-)
-
-
1024 (-)
8 (64)
KP55
1024 (-)
1024 (-)
1024 (-)
1024 (-)
-
512 (-)
1024 (-)
2 (8)
KP63
-
-
-
-
-
-
-
64 (-)
K24
-
1024 (-)
1024 (-)
-
-
2048 (-)
-
4 (256)
Providencia stuartii
PS299645
2048 (-)
1024 (-)
1024 (-)
512 (-)
2048 (-)
512 (-)
512 (-)
32 (-)
NEA16
-
-
-
2048 (-)
-
-
2048 (-)
32 (-)
PS2636
-
-
-
1024 (-)
-
1024 (-)
1024 (-)
32 (-)
Pseudomonas aeruginosa
PA01
-
1024 (-)
1024 (-)
1024 (-)
-
512 (-)
1024 (-)
128 (256)
PA124
-
-
-
-
-
1024 (-)
-
32 (-)
strain [E.c: Escherichia coli, E.a: Enterobacter aerogenes, K.p: Klebsiella pneumoniae, P.s: Providencia stuartii, and P.a: Pseudomonas aeruginosa]. [AAS: Aframomum alboviolaceum (stem), AAL: Aframomum alboviolaceum (leaves), ALL: Aframomum letestuanum (leaves), CPP: Cucurbita pepo (pericarps), PPS: Physalis peruviana (stem), RHP: Raphia hookeri (pericarps), and THL: Tristemma hirtum (leaves); CHL: chloramphenicol]; MIC: minimal inhibitory concentration; MBC: minimal bactericidal concentration; -: MIC and MBC > 2048 μg/mL; MIC in bold: significant activity.
