Comparison of the volatile oils obtained by different distillation conditions of Iranian foeniculum vulgare mill

ABSTRACT

Many articles on Foeniculum vulgare Mill, essential oil constituents have been published. The goal of this article is to study the influence of preparations of essential oil on quality and quantity of the essence. We prepared the essences by two methods [hydrodistillation and steam distillation]. Hydrodistillations were conducted in four different process times [15, 30, 60 and 150 minutes] and the latter conducted at 150 minutes. The oils were analysed by GC and GC/MS. 37 major compounds were detected in the oil. Totally 91.37 to 97.57% of the essences were consisted of these compounds. [E] anethole, estragole and D-[+]-fenchone were the most frequent compounds. The highest percent of anethole was at 30 minutes