EFFECT OF DISTILLATION TIME ON ESSENTIAL OIL COMPOSITIONS OF BAY LEAF (Laurus nobilis L.)

Abstract

Öz:Önemli tıbbi-aromatik bitkilerden birisi olan defnenin yaprakları baharat olarak kullanılmasının yanında uçucu yağ üre-timinde de yaygın bir şekilde kullanılmaktadır. Defne uçucu yağının kalitesi bileşimi ile doğrudan ilişkilidir. Uçucu yağ bileşimi, kullanılan materyalin tür veya çeşidi olmak üzere, yetiştirildiği bölge, hasat zamanı, uygulanan proses gibi deği-şik faktörlerden etkilenebilmektedir. Çalışma kapsamında hidro-distilasyon süresinin defne uçucu yağ bileşimi üzerine olan etkisi araştırılmıştır. Bu amaçla beş farklı distilasyon sü-resinin (10, 20, 30, 60 ve 120 dakika) etkisi incelenmiştir. Araştırma bulguları distilasyon süresinin defne uçucu yağ bileşiminde oldukça etkili olduğunu göstermiştir. Defne yaprak uçucu yağının en önemli bileşeni olan 1,8-sineol uygulama süresine bağlı olarak %57.7-79.4 aralığında değişim göster-miştir. Bulgular distilasyon süresi dikkate alınarak pazar talebi ve uygulama alanına göre farklı bileşimlere sahip defne yaprak uçucu yağı üretilebileceğini ortaya koymuştur.Anahtar Kelimeler: Defne, Laurus nobilis, Distilasyon süresi, Uçucu yağ bileşimi Abstract: EFFECT OF DISTILLATION TIME ON ESSENTIAL OIL COMPOSITIONS OF BAY LEAF (Laurus nobilis L.)Bay leaf is an important medicinal and aromatic plant. It is used as spice and also in essential oil production. Leaf essential oil quality is related with its composition. Its composition could be affected from plant species or cultivar, growing area, harvesting time, processing methods. In this study, the effect of hydro-distillation time on essential composition of bay leaf was investigated. For this purpose, essential oil composition of bay leaf was determined during five different distillation periods (10, 20, 30, 60 and 120 minutes). The research findings showed that significant differences were observed in essential oil composition with respect to distillation time. Main component of bay leaf essential oil is 1,8-cineole and ranged between 57.7-79.4% according to distillation time. Results showed that it is possible to produce varied composition bay leaf essential oil by taking in consideration distillation time.

The Effect of Hydrodistillation Times and Cold Pressing on Yield and Composition of Sweet Orange (Citrus sinensis) Peel Essential Oil

“…In our study, the main component of Navelina orange peel essential oil was 96% limonene in all of the samples. Similar results have been reported in other studies on orange (Hosni et al, 2010;Dugo and Bonaccorsi, 2014;Ferhat et al, 2016;Gölükcü et al, 2018).…”

“…It is stated that in the production of essential oil from some medicinal and aromatic plants, products with different compositions can be obtained depending on the distillation time (Zheljazkov et al, 2013;Gölükcü et al, 2018;Durazzini et al, 2019;Anastasopoulou et al, 2020). Within the scope of the research, the effect of five different hydrodistillation periods on the yield and composition of sweet orange peel essential oil was investigated.…”

Determination of Antimicrobial Activity of Different Essential Oils Obtained from Plants on Staphylococcus aureus Strains Isolated from Foods

“…The dominant active ingredient of clove essential oil is eugenol; most active substances found in black seed oil are thymokinone and p-sinene (Bulca et al, 2014;Han et al, 2017;Omonjio et al, 2018). Eucalyptus oil, laurel oil and sage oil is the dominant active ingredient 1.8 cineol (dos Santos et al, 2007;Barbosa et al, 2016;Gölükçü et al, 2017). Similarly, rosemary essential oil contains 1.8 cineol and camphor; α pinene and limonene in cumin oil, α felladren and limonene in dill oil; α pinene and α felladren in ginger oil and limonene and α pinene in pine oil are predominantly active substances (Hussain et al, 2010;Radulescu et al, 2010;Sultan et al, 2005;Demirci et al, 2015).…”