Table 1.
In vitro antimicrobial activity of different parts of Tribulus terrestris
| Microorganisms |
MIC (mg/ml) |
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| Fruits |
Leaves |
Roots |
Control |
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| A | E | C | A | E | C | A | E | C | M | AB | |
| Gram-positive | |||||||||||
| S. aureus | 2.50 | 0.62 | 0.62 | 2.50 | 1.25 | 2.50 | >5.00 | 0.62 | 0.31 | 0.07 | NT |
| B. subtilis | 1.25 | 0.15 | 0.31 | 1.25 | 0.31 | 0.31 | 2.50 | 0.62 | 0.31 | 0.01 | NT |
| B. cereus | 1.25 | 0.15 | 0.31 | 2.50 | 0.62 | 0.62 | 5.00 | 1.25 | 0.62 | 0.03 | NT |
| C. diphtheriae | 0.62 | 0.15 | 0.31 | 1.25 | 0.62 | 1.25 | 2.50 | 1.25 | 0.62 | 0.62 | NT |
| Gram-negative | |||||||||||
| P. vulgaris | >5.00 | 0.15 | 1.25 | 2.50 | 0.31 | 1.25 | >5.00 | 2.50 | 1.25 | 0.15 | NT |
| E. coli | 1.25 | 0.62 | 0.62 | 2.50 | 0.62 | 1.25 | >5.00 | 2.50 | 1.25 | 0.15 | NT |
| S. marcescens | >5.00 | 2.50 | 2.50 | >5.00 | 5.00 | >5.00 | >5.00 | >5.00 | >5.00 | 2.50 | NT |
| S. typhimurium | 5.00 | 1.25 | 2.50 | >5.00 | 1.25 | 5.00 | >5.00 | >5.00 | 2.50 | 2.50 | NT |
| K. pneumoniae | 2.50 | 1.25 | 1.25 | 2.50 | 0.31 | 2.50 | >5.00 | 2.50 | 1.25 | 1.25 | NT |
| P. aeruginosa | >5.00 | 1.25 | 2.50 | >5.00 | 1.25 | 2.50 | 5.00 | 2.50 | 1.25 | 2.50 | NT |
| Yeast | |||||||||||
| C. albicans | >5.00 | 0.62 | 2.50 | >5.00 | 1.25 | 2.50 | >5.00 | 5.00 | 2.50 | NT | 0.15 |
A: Aqueous extract; E: Ethanol extract; C: Chloroform extract; M: Maxipime; AB: Amphotericin B; NT: Not tested