Identification of Volatile Compounds (VCs) in the Leaves Collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ Olive Tree Varieties

Authors : Ahmet DURSUN, Zehra GÜLER, Dilek ÖZKAN, Dilşat BOZDOĞAN KONUŞKAN

Pages : 195-204

Doi:10.21448/ijsm.370128

View : 15 | Download : 2

Publication Date : 2017-11-25

Article Type : Research Paper

Abstract :There is a considerably interest on some fruits and leaves extracts such as olive leaf, due to their beneficial health effects. Olive leaf has been consumed as tea for many years. However, the studies on volatile compounds insert ignore into journalissuearticles values(VCs); of leaves are scarce. Therefore, this study was aimed to evaluate of VCs in the leaves collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ olive trees varieties grown in Hatay province. The VCs were analyzed by gas chromatography-mass spectrometry insert ignore into journalissuearticles values(GC-MS); using solid phase micro-extraction insert ignore into journalissuearticles values(SPME);. The 97 out of 127 VCs identified were found common in all the olive leaves. Terpenes, aldehydes, alcohols and ketones were identified in the olive leaves as major VCs groups, which accounted for about 36-60%, 20-28%, 6-14% and 4-8% of total VCs identified in leaves, respectively. The relative proportions of these chemical groups showed considerably differences among olive leaves. α-Cubebene was found as major VC followed by trans-caryophyllene, α-farnesene, trans-2-hexenal, benzeneethanol, nonanal, trans,trans-2,4-heptadienal, cycloisosativene, trans-4,8-dimethyl-1,3,7-nonatriene, 2,4-heptadienal, α-humulene, α-muurolene and benzaldehyde. These compounds accounted for 56-75% of total VCs identified in the olive leaves. While ‘Halhalı’ olive leaf had highest insert ignore into journalissuearticles values(p<0.01); levels of α-cubebene insert ignore into journalissuearticles values(31.79%);, cycloisosativene insert ignore into journalissuearticles values(7.69%); and α-muurolene insert ignore into journalissuearticles values(4.05%);, ‘Sarı Hasebi’ had trans-caryophyllene insert ignore into journalissuearticles values(23.16%);, trans-4,8-dimethyl-1,3,7-nonatriene insert ignore into journalissuearticles values(4.65%);, α-humulene insert ignore into journalissuearticles values(3.64%); and ‘Gemlik’ had benzeneethanol insert ignore into journalissuearticles values(6.93%);, nonanal insert ignore into journalissuearticles values(5.07%);, and benzaldehyde insert ignore into journalissuearticles values(2.17%); at the highest levels. This study has showed that olive leaves from each variety are a good terpene source that makes them important in terms of beneficial effects on health.
Keywords : Olive tree leaves, Volatile compounds, Gemlik, Terpenes