TY - JOUR T1 - Seasonal Variation in the Chemical Composition, Antioxidant Activity and Total Phenolic Content of Teucrium persicum Boiss. Essential Oils AU - Hajiaghaee, Reza AU - Ajani, Yousef AU - Amanzadeh, Yaghoub AU - Amini, Mohsen AU - Monsef-Esfahani, Hamid Reza AU - Miri, Abdolhossein AU - Hadjiakhoondi, Abbas JO - Research Journal of Biological Sciences VL - 5 IS - 7 SP - 492 EP - 498 PY - 2010 DA - 2001/08/19 SN - 1815-8846 DO - rjbsci.2010.492.498 UR - https://makhillpublications.co/view-article.php?doi=rjbsci.2010.492.498 KW - monoterpenes KW -hydrocarbons KW -oxygenated KW -distillation KW -Chemical composition KW -sesquiterpenes AB - Essential oils from the aerial parts of Teucrium persicum Boiss. (Labiatae), collected in 3 stages (pre-flowering, flowering and post-flowering) from plants grown in the Fars province of Iran were obtained by steam distillation. The chemical composition of the oils were analyzed by GC-MS. Analysis of the chemical profile of the isolated oils revealed the presence of >80 compounds, mainly sesquiterpene hydrocarbons, oxygenated monoterpenes and sesquiterpenes. They contained α-terpinyl acetate, α-cadinene, 1,4-cadinadiene, linalool and cadinol. Average yield was 1%. The studied essential oils showed good antioxidant activities as calculated by 3 in vitro assays: DPPH radical scavenging, Ferric Reducing Power Assay (FRAP) and Reducing Power (RP). ER -