Diurnal and nocturnal variability of essential oil content and components of Lavandula angustifolia Mill. (Lavender)
Abstract
Aims: The study aimed to make a comprehensive comparison in the effects of both diurnal and nocturnal variations at full bloom on dried flowers, peduncles and leaves were checked on the essential oil contents and components of lavender under hot-summer Mediterranean (Csa type) climatic conditions of Uşak province (Turkey).
Methods and Results: The samples of flowers, peduncles and leaves were harvested at full blooming (14 July) using eight different times (06:00, 09:00, 12:00, 15:00, 18:00, 21:00, 00:00; 03:00) in 24 hours. The air-dried (shade) 100 g each of flowers, peduncles and leaves were taken from the plants and water distilled for 3 h with usage of a Clevenger-type apparatus. Than, the essential oil samples were subjected to GC-MS analysis for their components.
Conclusions: The percentage of essential oil components varied and was influenced by the type of sample and the time of harvest. The results demonstrated that the essential oil contents changed between 6.73-10.27% for flowers, 0.29-0.76% for peduncles, and 0.08-0.42% for leaves. According to GC-MS analysis; Linalool, terpinene-4-ol, camphor, borneol, 1,8 cineole, lavandulol, β-pinene and β-farnesene were determined as the main components during full flowering period. The highest essential oil (10.27%) was obtained from flowers harvested at 15:00 with linalool as main compound of Lavender essential oil.
Significance and Impact of the Study: It was concluded that the harvest at 09:00 should be preferred for production of high quantity of camphor and nocturnal harvest at 03:00 should be preferred for production of high quality linalool from Lavender essential oils. The results depicted that the amount of linalool was higher in flowers and peduncles and camphor was higher in leaves.
Keywords
References
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Details
Primary Language
English
Subjects
Agricultural Engineering
Journal Section
Research Article
Authors
Havva Kul
This is me
0000-0002-0567-4333
Türkiye
Publication Date
December 18, 2019
Submission Date
July 11, 2019
Acceptance Date
October 23, 2019
Published in Issue
Year 2019 Volume: 24 Number: 3