Table 6.
Comparison between crude extract and its dilutions. (Tukey’s test at 5% probability).
| Oil of S. molle | Inhibition halos (mm) ± standard deviation * | |||||
|---|---|---|---|---|---|---|
| Dilution | Concentration (mg/mL) | S. aureus | E. coli | P. aeruginosa | ||
| Crude | 950 ** | 38.2 ± 0.2 Aa | 22.0 ± 0.2 Ba | 16.0 ± 0.2 Ca | ||
| 1:2 | 475 | 29.2 ± 0.2 Ab | 15.3 ± 0.2 Bb | 11.5 ± 0.2 Cb | ||
| 1:4 | 237 | 25.3 ± 0.2 Ac | 10.8 ± 0.2 Bc | 7.2 ± 0.2 Cc | ||
| 1:8 | 118 | 17.5 ± 0.2 Ad | 8.7 ± 0.2 Bd | 5.3 ± 0.2 Cd | ||
| 1:10,5 | 90 | 15.3 ± 0.2 Ad | 5.7 ± 0.2 Bd | 5.0 ± 0.2 Cd | ||
| 1:16 | 60 | 14.5 ± 0.2 Ad | 5.0 ± 0.2 Bd | 5.0 ± 0.2 Cd | ||
| 1:32 | 30 | 5.3 ± 0.2 Ae | 5.0 ± 0.2 Bd | 5.0 ± 0.2 Cd | ||
| Positive control | 40.5 ± 0.1 | 38.2 ± 0.7 | 39.2 ± 0.8 | |||
| Negative control | 5.0 | 5.0 | 5.0 | |||
* The value of 5.0 mm corresponds to the diameter of the cylindrical cavity, no inhibition zone; ** The calculation of the concentration was based on the density of crude oil extract of S. molle (d = 0.95). Capital letters in the same line indicate no statistical difference, the same lowercase letters in the same column indicate no statistical difference (Tukey’s HSD test, p > 0.05).