Study the effect of some traditional plant extracts to Escherichia coli on Jeddah province

Plants are a source of chemical compounds such as alkaloids, steroids, essential and fixed oils, which can be used against many diseases. Here, we evaluated the aqueous and solvent extract of four plants (Syzygium aromaticum, Elettaria cardamomum, Nigella sativa, Capsicum annuum), and assessed their antimicrobial activity against Escherichia coli using will diffusion method after 24 h. The oil crude extract of S. aromaticum showed the highest antimicrobial activity, while the oil crude extract of C. annuum showed the lowest activity. Our study revealed that the utilization of aqueous and solvent extract of some traditional plants against E. coli would be an effective way in the management of some environmental bacterial diseases