Studies on the essential oil of Foeniculum vulgare mill. var. Dulce mill. from Bulgaria

The composition of the essential oils of Foeniculum vulgare Mill, var. dulce Mill, cv. Shumen, obtained by hydrodistillation, steam distillation and hexane extraction, respectively, was analyzed by GC/MS. By steam distillation was obtained lower yield of oil (1,01%), and by extraction - the highest (4,02%). The composition of the essential oils, obtained by hydrodistillation and extraction is similar, and the anethole content is 74,67% and 69,32%, respectively. In the oil, obtained by steam distillation the quantities of anethole and fenchone are reduced - 54,94% and 15,09%, respectively.