Table 2.
Antibacterial activity of R. coriaria L essential oils (Sumac EO, 1–8) from the Jordanian market and agricultural field.
| Microorganism | Sample # | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3.0% DMSO | Ciprofloxacin | EO-1 | EO-2 | EO-3 | EO-4 | EO-5 | EO-6 | EO-7 | EO-8 | |
| Zone of Inhibition (mm) a | ||||||||||
| Staphylococcus aureus ATCC 6538 | - | 24 | 12 | 10 | 13 | 13 | 14 | 13 | 11 | 15 |
| E. coli ATCC 8739 | - | 18 | 9 | 8 | 10 | 9 | 11 | 9 | 8 | 11 |
| Minimum Inhibitory Concentration b (µg/mL) | ||||||||||
| Staphylococcus aureus ATCC 6538 | - | 0.59 | 65.80 | 131.25 | 65.80 | 131.25 | 32.80 | 65.80 | 65.80 | 32.80 |
| E. coli ATCC 8739 | - | 2.34 | 131.25 | 262.50 | 131.25 | 262.50 | 131.25 | 131.25 | 131.25 | 131.25 |
Diffusion method. a Diameter of well = 6 mm, n = 2, b Minimum inhibitory concentration, n = 2; - = no inhibition in microbial growth. # Samples of Sumac were collected from the different location and local market from Jordan. Sample 1 (Amman, Downtown), Sample 3 (Amman City), Sample 4 (city Mall), Sample 5 (Al-Fuheis), and Sample 8 (Al-salt City). Sample 2 (Ajloun Forest Reserve), Sample 6 (Al-Salt field), and Sample 7 (Al-Fuheis field).