Abstract

Comparison of chemical composition and antibactrial activity of essential oils extracted by microwave-assisted hydrodistillation and hydrodistillation methods from Foeniculum vulgare Mill. (Fennel)

Author(s): Mohammad Hossein Farjam, Fatemeh Bazregari

In this study, The essential oils isolated from aerial parts of Foeniculum vulgare Mill by hydrodistillation (HD), and microwave-assisted hydrodistillation (MWHD) techniques, were analyzed bymeans ofGC and GC-MSmethods. The oil extracted byMWHDmethod contained 12 compoundswith a yield of 0.12%(w/w), representing 77.78%of the total oil. 12 compoundswere identified in the volatiles fromthe aerial parts of F. vulgare byHDmethod comprising 37.9%of the total oil in 0.12%(w/w) yield. The main components of the water distilled oil were found to Phenyl glyoxime (12.84%), Isopulegone (7.17%), p-Mentha-2,4,(8)-diene (5.67%)while the oil extracted byMWHDmethod wasmainly composed of dihydro indol-4- ol-2-one,5,7-dibromo-3,3-dimethyl(34.03), Benzene, (1-methyl-2-propenyl- 3-ol) (21.52%) and 7-hydroxy-bicyclo [3.3.1] non-2-en-9-one (7.55%).Also the anticlerical activities of the oils were compared by usingMIC method.