The aim of this experiment was to determinate the effect of different drying temperatures on the content and chemical composition of essential oil of sage (Salvia officinalis L.). Essential oil isolated for 3 hours from fresh and oven dried leaf samples (at 35°C, 45°C, 55°C and 65°C) by using Clevenger type apparatus was analyzed with GC-MS. The content of volatile oils (%) in different drying temperatures was in the order of: fresh leaf sample (0,483%), dried leaf sample at 35 °C (1,837%), at 45 °C (1,550%), at 55 °C (1,267%) and at 65 °C (1,263%). In total, 36 compounds of essential oil were identified from fresh and dried leaf samples. The main compounds of essential oils isolated in different drying temperatures were α-thujone and camphore. α-Thujone was highest at fresh leaf sample (28,53%) and lowest at 45 °C (11,21%). The highest and lowest camphore contents were observed at sample dried at 35 o C (32,53%) and fresh leaf sample (23,62%). On the other hand, the ratio of 1,8-Cineole, effective in the medical use of sage, has also changed depending on different drying temperatures. The highest and lowest 1,8-Cineole ratios were observed at sample dried at 35 o C (9,480%) and fresh leaf sample (7,947%). Results showed that different drying temperatures were effective on essential oil content and chemical composition of essential oil of sage.
Bu araştırma Eskişehir ekolojik koşullarında 2015 yılında yürütülmüştür. Çalışmada bitkiler dört farklı gelişim döneminde (çiçeklenme öncesi, çiçeklenme başlangıcı, tam çiçeklenme ve tohum bağlama dönemi) üç tekerrürlü olarak hasat edilmiştir. Örnekler kurutma dolabında (35 ºC) kurutulduktan sonra su distilasyonu yöntemiyle uçucu yağ oranları belirlenmiştir. Uçucu yağların bileşenleri ise GS/MS ile tayin edilmiştir. Araştırmanın sonuçlarına göre, uçucu yağ oranı farklı gelişme dönemlerinden istatistiki olarak önemli düzeyde etkilenmiştir. Nitekim drog yaprakta uçucu yağ oranı %1.0-2.0 arasında değişmiştir. En yüksek uçucu yağ oranı (%2.0) çiçeklenme öncesi dönemde yapılan hasattan elde edilirken, en düşük uçucu yağ oranı (%1.0) tam çiçeklenme ve tohum bağlama döneminde yapılan hasattan elde edilmiştir. Diğer taraftan, α-thujone ve camphor tüm gelişme dönemlerinde ana bileşen olarak tespit edilmiştir. En yüksek α-thujone oranı (%47.24) tam çiçeklenme döneminde yapılan hasattan elde edilirken, en düşük oran (%23.09) ise çiçeklenme başlangıcı döneminde yapılan hasattan elde edilmiştir. Bu yüzden, tıbbi adaçayından α-thujone oranı düşük ve en yüksek düzeyde uçucu yağ elde etmek için hasadın çiçeklenme başlangıcı döneminde yapılması tavsiye edilmektedir.
This study was conducted in 2015 and 2016 in Eskisehir Osmangazi University, Faculty of Agriculture, Field Crops Department experimental field. The aim of this study was to determine the performance of yield and quality of lemon balm (Melissa officinalis L.) populations obtained from the natural vegetations of different provinces of Turkey at ecological conditions of Eskisehir. The study was designed in the Randomized Complete Block Design with three replications. As plant materials, eleven populations gathered from Tokat-2 (Geyraz),
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.