Essential Oils of Hertia Cheirifolia Leaves in Fructification Stage with High Anti Bacterial Activity

Abstract

The essential oil (EO) obtained by hydrodistillation of the Hertia cheirifolia leaves  in fructification stage  located in Oum El bouaghi  (East of Algeria) have been studied by GC/MS. Fourty seven compounds were identified representing 95,21% of the essential oils. The main constituents were: α-Pinene (49.9 %), 2-(1-Cyclopent-1-enyl-1-methylethyl) cyclopentanone (24.6 %) and β-Phellandrene (2.1 %). In total, essential oil composition of Hertia cheirifolia leaves was considered as a rich source of hydrocarbon monoterpens. Moreover, the antimicrobial activity of the essential oil against four strains bacteria was studied. It was found that the most powerful effect was against Escherichia coli ATCC25922 and Staphylococcus aureus ATCC25923 with inhibition zone 27.66±0 and 26.33±0 at 2000 µg/mL successively.