تأثير مستخلصات أوراق نبات اليوكالبتوسEucalyptus camaldulensis D. في جرثومةStaphylococcus aureus خارج الجسم الحي.

Abstract

This study was conducted to test in vitro the effect of active materials that extracted by cold and boiled water, in addition to the extraction by different organic solvents , i.e. Ethyl Alcohol ; Hexan and Ethyl Acetate for the leaves of Eucalyptus plant on inhibition growth Staphylococcus aureus for its importance due to the causes of numerous diseases . Results showed from the preliminary chemical (filteration) test that, the aqueous ; alcoholic and chloroformic crude extract of Eucalyptus leaves contain phenoles , terpenoids and alkaloids. Results also proved that the cold aqueous extracts of Eucalyptus gave the highest inhibition effect against the growth of S. aureus on the culture media with inhibition diameter of 14.6mm , while , the Ether part of alcoholic extract gave the lowest inhibition diameter activity of 9.05 mm . The study also showed that, the minimum inhibition concentration of the mentioned extracts was 6.25 mg/ml for cold aqueous extract of Eucalyptus for growth of S .aureus. while, the minimum bactericidal concentration was 12.5 mg/ml .