Table 1.
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.