Hangisi Gerçek Defne Yaprağı Uçucu Yağı?

Yıl 2018, Cilt: 20 Sayı: 3, 477 - 485, 15.12.2018

Ayben Kılıç-pekgözlü , Esra Ceylan , Öznur Çakal

Öz

Bu çalışmada ticari olarak satın alınan onbir
adet defne yaprağı uçucu yağı ile laboratuvar koşullarında hidrodestilasyon
yöntemi ile elde edilen taze ve kurutulmuş defne yaprağı uçucu yağlarının
kimyasal yapıları GC-FID ve GC-MS ile analiz edilmiştir. Analizler sonucunda
dokuz ayrı uçucu  yağın kimyasal yapısı
aynı bulunurken, üç yağ tamamen farklı bulunmuştur. Uçucu yağlardan birinde ise
% 85 oranında isopropil alkol bulunmuştur. 1.8-sineol (% 47.5-59.1) taze
örnekler ve bazı yağlarda ana bileşen olarak tespit edilirken, α-terpinilasetat
(% 4,7-10,7), sabinen (%2.8-10.4) ve α-pinen (% 5,02-7,25) diğer önemli
bileşenlerdir. Diğer bir örneğe ait kimyasal içerik, uçucu yağın defne
meyvesine ait olduğunu ve % 33,5 linoleic ve % 30,2 oleic asit içerdiğini
göstermiştir. Genel olarak, oksijenli monoterpenhidrokarbonların (% 68,5-77,5)
oranı fenilpropanoidlere (% 0,43-2,41) göre yüksek bulunmuştur. Bu da incelenen
defne uçucu yağlarının tıbbi amaca daha uygun olduğunu göstermektedir. Ticari
olarak tedarik edilen yağların p-simen oranı % 1,49-6,71 arasında bulunmuştur.
Bu durum uçucu yağların beklemiş olduğunu göstermektedir.

Anahtar Kelimeler

Laurus nobilis, defne, uçucu yağ, 1, 8-sineol

Which is the Real Bay Leaf Essential Oil?

Öz

In this study, chemical analysis of eleven trade
bay leaf essential oil and essential oils obtained by hydrodistilation in the
laboratory were done by GC-FID and GC-MS. Chemical composition of  nine bay leaf essential oil were found the
same while three bay leaf essential oil were totally different. In one of the
samples, the amount of isopropyl alcohol was 85%. In the fresh bay leaf oil and
in some trade marks 1.8-cineol (47.5-59.1 %) was found to be the major compound
while α-terpinylacetat ( 4,7-10,7%), sabinen (2.8-10.4%) and α-pinen
(5,02-7,25%) were the other dominant compounds. In one of the trade samples the
results indicate that it is the bay-fruit essential oil not leaf with the
composition of 33,5% linoleic acid and 30,2 % oleic acid. Generally, the amount
of oxygenated monoterpenhydrocarbons (68,5-77,5%) was higher compared to
phenylpropanoids (0,43-2,41%). These results showed that analyzed essential
oils were suitable for medical usage. p-cymen (1,49-6,71%) ratio was higher in
the trade marks  which indicated that
these oils were degraded.

Anahtar Kelimeler

Laurus nobilis, bay, essential oil, 18-cineol

Kaynakça

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