Paper Title
Antibacterial Properties of Ceratonia Siliqua L Ethanolic Extract and Artemisia Herba Alba Essential Oil

Abstract
Algeria, by its geographical location, offers rich and diverse vegetation including aromatic and medicinal plants. Among these plants, our interest has focused on the Ceratonia siliqua L. and artemisia herba alba for the medicinal and aromatic properties of its compounds (terpene, flavonoid, and essential oil..). The main objective of this work consisted to evaluate the antibacterial activity of the ethanolic extracts and the essential oil of these plants, which are widely used in traditional medicine, in the state of Biskra (Southeast Algeria), for their medicinal and therapeutic properties. Both Artemisia Herba Alba essential oil and Ceratonia Siliqua ethanolic extract were used for determination of their minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The extraction of the essential oil of artemisia herba alba was performed by hydro-distillation (Clevenger type) and had yielded 1.34% (m/m). The ethanolic extract was performed by a soxhlet extractor with a yield value of 16.92%. The results of the antibacterial activity against seven pathogenic bacteria (Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, klebsiella oxytoca, Bacillus cereus, listeria monocytogenes, Salmonella typhi) by the agar disk diffusion method; showed that the essential oil of artemisia herba alba has a very important antibacterial activity compared to ceratonia siliqua ethanolic extract Keywords - Artemisia Herba Alba; Ceratonia Siliqua; Essential Oil; Ethanolic Extract; Antibacterial Activity