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Table 4 MIC and FICI of eugenol and colistin against Escherichia coli strains

From: Synergistic effect of eugenol with Colistin against clinical isolated Colistin-resistant Escherichia coli strains

Strains Agents MIC (μg/mL) FICI Outcome
Alone Combination
ATCC 25922 Eugenol 4 1 0.5 Synergy
Colistin 1 0.25
E. coli Porcine1 Eugenol 4 2 0.625 partial synergy
Colistin 8 2
E. coli Porcine2 Eugenol 4 1 0.375 Synergy
Colistin 8 1
E. coli Porcine3 Eugenol 4 1 0.5 Synergy
Colistin 8 2
E. coli Duck Eugenol 4 2 0.625 partial synergy
Colistin 2 0.25
E. coli Goose1 Eugenol 4 1 0.5 Synergy
Colistin 2 0.5
E. coli Goose2 Eugenol 4 1 0.5 Synergy
Colistin 4 1
E. coli Goose3 Eugenol 4 1 0.5 Synergy
Colistin 4 1
E. coli Goose4 Eugenol 4 2 0.625 partial synergy
Colistin 16 2
E. coli Peacock Eugenol 8 4 0.625 partial synergy
Colistin 2 0.25
E. coli Zebra Eugenol 4 1 0.375 Synergy
Colistin 2 0.25
E. coli Fox Eugenol 4 1 0.625 partial synergy
Colistin 4 1
E. coli Bovine Eugenol 4 2 0.625 partial synergy
Colistin 16 2
E. coli Avian Eugenol 8 2 0.5 Synergy
Colistin 2 0.5