Trachyspermum ammi's seeds/leaves aqueous, ethanolic and methanolic extracts were screened for its antibacterial activity against Bacillus cereus, Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, Lactobacillus acidophilus, Micrococcus luteus, Staphylococcus aureus, Streptococcus pneumoniae and Pseudomonas aeruginosa. Among all the extracts, ethanolic extract of Trachyspermum ammi's seeds were found to be effective against all the test bacteria but its aqueous extract was effective only against Bacillus subtilis, Staphylococcus aureus and Pseudomonas aeruginosa. While it's methanolic extract showed inhibitory potential against a number of test bacteria. In case of Trachyspermum ammi's leave extracts, alcoholic extracts exhibited low antibacterial activity and the aqueous extract possess no antibacterial property at all.

Foeniculum vulgare (Apiaceae) is a popular plant with valuable medicinal and culinary importance. It is mostly used in the treatment of ailments associated with digestive and respiratory systems. Besides its fruit are dry seeds which is used as flavoring agent for meat, fish and beverages. Phytoconstituents of F. vulgare seed extracts such as phenols and aromatic derivatives possess different physiochemical properties including competence to inhibit the growth of certain bacteria. Thus this study was conducted to determine the antibacterial property of Foeniculum vulgare seed extract against a variety of pathogenic bacteria.