Author
Research Institute of Forest and Ranglands, Tehran, Iran
Abstract
In order to increas the yield and quality of an eucalyptus essential oil(eucalyptus globulus) the leaves of plant was collected from Research Station of Zaghmarz in Pasansd of Behshahr and was identified by the staff of botanical department of Research Institute of Forests and Rangelands.Dried and ground leaves of plant were steam and hydro distilled and fractions were collected every fifteen minutes.
Proceeding of distillation time resulted to increas the yield and reduce cineole content.
In steam distillation method,the oil yield was increased from 1.6% after 5 min. to 2.42% after 180 min. whereas 1,8-cineole content was reduced from 82.2% to 74.8%, respectively.
In hydrodistillation method, the oil yield was increased from 1.55% after 15 min. to 2.86% after 180 min. whereas cineole content was reduced from 92.7% to 85.6%, respectively.
Fifteen compounds were identified among which 1,8-cineole (74.8%-82.2%), α-pinene (6.28-7.70%) and limonene (5.70-6.20%) in steam distillation method and 1,8-cineole (85.60-92.70%), α-pinene (2.02%-2.37%) and limonene (2.04%-3.10%) in hydrodistillation method were the major constituents, respectively.
Keywords
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