Chemical Composition and Antimicrobial Activities of the Essential Oil fromGlycyrrhiza glabraLeaves

The essential oil of Glycyrrhiza glabra leaves was obtained by hydrodistillation and analyzed by GC and GC-MS. Other parameters such as refractive index, optical rotation; density, polarimetric deviation; freezing point and Solubility in ethanol are also measured. The main hydrocarbon and oxygen containing compounds were: Isoniazid (13.36 %) ; Diethyltoluamide (6.56 %), Benzoic acid (5.37 %), Benzene (4.58 %), Linalool (2.25 %), Prasterone (5.63 %), Warfarin (1.43 %), Iodoquinol (1.90 %), Phenol, 4-(2-aminopropyl) (1.30 %). The screening of antibacterial activity was conducted by a disc diffusion test and the minimum inhibitory concentration was determined against Pseudomonas Aeruginosa, Salmonella typhi, Escherichia coli and Staphylococcus aureus.