| dc.description.abstract | This study aimed to test the inhibitory effect of hot and cold aqueous extracts of Thymus vulgaris at several concentrations (100, 200, 300, and 400) mg/ml against three types of bacteria that infect the human respiratory tract, namely Gram-positive (Streptococcus pneumoniae), and Gram-negative (Mycoplasma pneumoniae, and Legionella pneumophilia) compared to the antibiotic Amoxicillin employing agar well diffusion method. Results have elucidated that the aqueous extracts of Thymus vulgaris have an obvious inhibitory effect in their various concentrations against all species of bacteria studied. Furthermore, the concentrations of 300 and 400 mg/ml had the strongest inhibitory effect compared to other extracts concentrations and the antibiotic Amoxicillin with the range of (7.3 – 12.1) and (9.6 – 11.9) mm respectively. Whilst, the concentration of 100 mg/ml showed the weakest inhibitory effect with all species of bacteria ranging between (1.7 – 3.1) mm. However, Streptococcus pneumoniae was the most antibiotic-resistant bacteria. Results have also indicated that cold extracts were highly efficient with negative bacteria while the hot extracts showed high efficiency with positive bacteria. | en_US |
