Study of Antibacterial Activity of Aqueous and Ethanolic Clove Ettract (Syzygium Aromaticum) on Gram Negative Bacteria

Abstract

The effects of plants aqueous and alcoholic extracts of cloves against some clinical species of microorganisms were studied. These isolates included: Pseudomonas sp., Klebseilla sp., Escherichia coli, and Acinetobacter. The susceptibility of these isolates was tested against plants aqueous and alcoholic extracts by the agar well diffusion method. The results showed that the alcoholic extract of cloves inhibits the growth of Acinetobacter sp., E. coli , Klebseilla sp inhibition zone diameter were (30 , 35 and 20 respectively ), While the aqueous extract of cloves inhibits the growth of Acinetobacter sp. , Klebseilla sp. , E. coli inhibition zone diameter were ( 25,13 and 10 mm respectively ). Pseudomonas showed resistance to alcoholic extract while Klebsiella showed resistance to aqueous extract.