Yahiaoui, K.Bouchenak, O.Boumaza, S.Toubal, S.Blizak, Meriem DjanetteNouani, A.Arab, K.2021-03-012021-03-0120212437-1114https://www.aljest.org/index.php/aljest/article/view/457https://dspace.univ-boumerdes.dz/handle/123456789/6531The overall phytochemical test results suggested that pulp, seeds, and leaves of both grafted and spontaneous varieties are especially rich in tannins , saponins, and leuco-anthocyanins. The result of the determination of total polyphenols Ceratonia siliqua L. showed that spontaneous leaves showed that the highest value of spontaneous leaves was 14 EAGmg / g, followed by grafted seeds (11.5 EAGmg / g), and spontaneous pulps (10.2 EAGmg / g). Infra -red spectroscopy revealed the presence of many functional groups in both varieties. The antimicrobial activity is particularly found with the spantaneous leaves against Escherichia coli (21.83 ± 0.93 mm) and Staphylococcus aureus (16.36 ± 0.63 mm) Microccus sp (15.83 ± 0.73 mm) and leaves grafted against Pseudomonas aeruginosa (14.30 ± 0.35 mm)frCeratonia siliqua LChemical screeningtotal polyphenolsAntimicrobial activityArticle