Table 2.
Minimum inhibitory concentrations (MICs) of gentamicin, enrofloxacin, and both essential oils (PcEO and MaEO) against all S. pseudintermedius and S. aureus strains.
| Strain | MIC | |||
|---|---|---|---|---|
| Gentamicin | Enrofloxacin | Patchouli | Tea Tree | |
| μg/mL | μg/mL | % v/v (mg/mL) |
% v/v (mg/mL) |
|
| Reference strain: Staphylococcus aureus ATCC 25923 |
0.5 ÷ 1 | ≤0.125 | 0.125 ÷ 0.25 (1.2 ÷ 2.4) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus aureus isolate Sa 1 |
0.5 ÷ 2 | 4 ÷ 8 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
2.5 ÷ 5 (22.4 ÷ 44.8) |
|
Staphylococcus aureus isolate Sa 2 |
0.5 ÷ 1 | 2 ÷ 4 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
5 ÷ 10 (44.8 ÷ 89.6) |
|
Staphylococcus aureus isolate Sa 3 |
8 ÷ 16 | 16 ÷ 32 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
2.5 ÷ 5 (22.4 ÷ 44.8) |
|
Staphylococcus aureus isolate Sa 4 |
0.5 ÷ 1 | 0.125 ÷ 0.25 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus aureus isolate Sa 5 |
0.25 ÷ 0.5 | 0.5 ÷ 1 | 0.125 ÷ 0.25 (1.2 ÷ 2.4) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus aureus isolate Sa 6 |
0.125 ÷ 0.25 | 0.125 ÷ 0.25 | 0.125 ÷ 0.25 (1.2 ÷ 2.4) |
0.625 ÷ 1.25 (5.6 ÷ 11.2) |
|
Staphylococcus aureus isolate Sa 7 |
0.0625 ÷ 0.125 | 0.032 ÷ 0.125 | 0.125 ÷ 0.25 (1.2 ÷ 2.4) |
0.625 ÷ 1.25 (5.6 ÷ 11.2) |
| Type strain: Staphylococcus pseudintermedius ED99 |
0.5 ÷ 1 | 0.125 ÷ 0.25 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 1 |
32 ÷ 64 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 5 (11.2 ÷ 44.8) |
|
Staphylococcus pseudintermedius isolate Sps 2 |
32 ÷ 64 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 3 |
64 ÷ 128 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 4 |
32 ÷ 64 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
0.625 ÷ 1.25 (5.6 ÷ 11.2) |
|
Staphylococcus pseudintermedius isolate Sps 5 |
128 ÷ 256 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 5 (11.2 ÷ 44.8) |
|
Staphylococcus pseudintermedius isolate Sps 6 |
64 ÷ 128 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
2.5 ÷ 5 (22.4 ÷ 44.8) |
|
Staphylococcus pseudintermedius isolate Sps 7 |
32 ÷ 128 | 64 ÷ 128 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
0.625 ÷ 1.25 (5.6 ÷ 11.2) |
|
Staphylococcus pseudintermedius isolate Sps 8 |
64 ÷ 128 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 9 |
32 ÷ 64 | ≤0.125 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 5 (11.2 ÷ 44.8) |
|
Staphylococcus pseudintermedius isolate Sps 10 |
0.0625 ÷ 0.125 | 32 ÷ 64 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 2.5 (11.2 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 11 |
0.125 ÷ 0.5 | ≤0.125 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
0.625 ÷ 2.5 (5.6 ÷ 22.4) |
|
Staphylococcus pseudintermedius isolate Sps 12 |
8 ÷ 32 | 0.25 ÷ 0.5 | 0.25 ÷ 0.5 (2.4 ÷ 4.8) |
1.25 ÷ 5 (11.2 ÷ 44.8) |