phytochemistry analysis of essential oils of heracleum lasiopetalum fruits, thymus carmanicus aerial parts, and myrtus communis leaves

background & aim: the use of herbs in traditional medicine to treatment of diseases and other purposes in the food industry and cosmetics has since long been considered.  considering that heracleum lasiopetalum, thymus carmanicus and myrtus communis have many health benefits therefore this research were performed to investigate the chemical composition of essential oils from these plants. experimental: the essential oil from the fruits of h. lasiopetalum, aerial parts of t. carmanicus and leaves of m. communis were extracted using a clevenger-type apparatus and analyzed by gc/ms. also content of the extracted essential oils were calculated.  results & discussion: results indicated the amount of essential oils of h. lasiopetalum, t. carmanicus m. communis were significant and they had volatile. the main constituents of essential oils were hydrocarbons, aldehydes, ketones, alcohols, phenols, ethers with phenolic and terpenes origin. recommended applications/industries: due to the health benefits and antioxidant compounds found in the essential oils of these plants are examined in vitro and in food.