Table 5.
Antimicrobial activity of EOs expressed as the minimum inhibitory concentration (MIC) in µL/mL against Gram-negative and Gram-positive bacteria.
| EOs | Gram-Negative Bacteria | Gram-Positive Bacteria | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PA | SE | YE | EF | SA | ||||||
| MIC 50 (µL/mL) |
MIC90 (µL/mL) |
MIC 50 (µL/mL) | MIC90 (µL/mL) |
MIC 50 (µL/mL) |
MIC90 (µL/mL) |
MIC 50 (µL/mL) |
MIC90 (µL/mL) |
MIC 50 (µL/mL) |
MIC90 (µL/mL) |
|
| LEO | 232.15 ± 0.58 aA | 288.41 ± 0.23 aB | 94.26 ± 0.19 aC | 115.15 ± 0.96 aD | 243.11 ± 1.01 aE | 391.10 ± 0.23 aF | 134.18 ± 0.22 aG | 255.21 ± 0.98 aH | 205.88 ± 0.14 aI | 286.99 ± 1.05 aB |
| MEO | 2128.30 ± 0.41 bA | 598.41 ± 0.74 bB | 5.72 ± 0.44 bC | 4.12 ± 0.15 bD | 297.96 ± 0.17 bE | 255.95 ± 0.07 bF | 270.68 ± 0.81 bG | 513.86 ± 0.69 bH | 19.42 ± 0.62 bI | 7.33 ± 0.46 bJ |
| REO | 134.51 ± 0.19 cA | 155.18 ± 0.09 cB | 93.58 ± 0.25 cC | 98.75 ± 0.11 cD | 255.95 ± 0.65 cE | 299.76 ± 0.35 cF | 270.68 ± 0.73 bG | 313.86 ± 0.05 cH | 198.58 ± 0.66 cI | 331.18 ± 0.41 cJ |
Note: Means ± standard deviation. MEO: Mint essential oil; LEO: Lavender essential oil; REO: Rosemary essential oil; P. aeruginosa—PA, S. enterica—SE, Y. enterocolitica—YE, E. faecium—EF, S. aureus—SA. Values in the same column with different small letters, and those in the same row with different upper-case letters are significantly different (p < 0.05).