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Minimum inhibitory concentrations (MIC).
| Sample | MIC copper (mM) | ||
|---|---|---|---|
| Bacterial strains | |||
|
E. coli (ATCC 25922) |
S. aureus (ATCC 29213) |
E. faecalis (ATCC 29212) |
|
| Soybeans extract | —a | —a | —a |
| Ionic solution of Cu | 20 ± 0 | 20 ± 0 | 20 ± 0 |
| Copper-amino acids chelate | 10 ± 0 | 10 ± 0 | 5 ± 0 |
| Copper nanoparticles | 40 ± 0 | 40 ± 0 | 20 ± 0 |
| EDTA-copper chelate | 20 ± 0 | 20 ± 0 | 20 ± 0 |
| EDTA solution | 40 ± 0 | 40 ± 0 | 40 ± 0 |
aThe antibacterial activity was not found with the mM concentrations used in this work.
