Table 4.
Bacterial strains | Compounds and MIC (in μg/ml) | |||
---|---|---|---|---|
3 | 5 | 6 + 7 | 8 | |
Escherichia coli | ||||
ATCC8739 | - | 128 | 64 | 256 |
ATCC10536 | - | 128 | 128 | 256 |
AG102 | - | 128 | 64 | 64 |
Pseudomonas aeruginosa | ||||
PA 01 | - | 128 | 128 | - |
PA 124 | 256 | 128 | 128 | 64 |
Enterobacter aerogenes | ||||
ATCC13048 | - | 128 | 64 | 128 |
EA-CM64 | - | 128 | 128 | 128 |
Providencia stuartii | ||||
ATCC29916 | - | 128 | 128 | 256 |
PS2636 | - | 64 | 64 | 256 |
Klebsiella pneumoniae | ||||
ATCC11296 | - | 128 | 128 | 256 |
KP55 | - | 128 | 128 | 128 |
Staphylococcus aureus | ||||
ATCC 25923 | - | 128 | 64 | 64 |
MRSA3 | - | 256 | 128 | 64 |
MRSA4 | - | 256 | 128 | 256 |
Tested compounds were a mixture (1:3) of stigmasterol and β-sitosterol (1 + 2); euphol (3); sitosterol-O-β- D -xylopyranoside (4); 3,3′,4′-tri-O-methylellagic acid (5); mixture 1:1 of afzelin and quercetin-3-O-β-D-xylopyranoside (6 + 7); 3,3′,4′-tri-O-methylellagic acid 4-O-β-D-glucopyranoside (8); ellagic acid-4-O-β-xylopyranoside-3,3′,4′-trimethyl ether (9). No MBC was detected at 256 μg/mL for all compounds; MIC values were >256 μg/mL for 1 + 2, 4 and 9