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The Effects of Cold Storage and Drying on Essential Oil Content and Composition in Oil-Bearing Rose (Rosa damascena Mill.) Flowers
Abstract
Oil-bearing rose (Rosa damascena Mill.) is the most important species, producing a highvalue
aromatic oil, which is used in the fragrance and cosmetic industries. The aim of this study was
to determine the influence of storage period (1, 2, 3, and 4 weeks at 4oC) and the drying (1, 2, 3, 4, 5,
and 6 months under room conditions) on rose oil content and composition. Essential oils produced by
Clevenger hydro-distillation were analyzed by GC/MS. Essential oil content of the rose flowers
during the storage period decreased from 0.035% to 0.010%. In the same period, while the
percentages of monoterpenic alcohols such as citronellol, geraniol and nerol reduced, the percentages
of hydrocarbones such as nonadecane, heneicocane and eicosane increased. The amount of dry
flowers was 15% of the fresh flowers drying under the room condititons. After drying, the essential oil
content of dry flowers was 0.060 %. But after the 6 months later, their essential oil contents
continuously decreased to 0.035%. The rose oil disitilled from dry roses had higher percentages of the
long-chain hydrocarbones such as nonadecane, nonedecen and heneicocane, and had lower
percentages of the monoterpenic alcohols such as citronellol, geraniol and nerol than the oil distilled
from fresh flowers.
Keywords
References
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Details
Primary Language
Turkish
Subjects
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Journal Section
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Publication Date
June 30, 2008
Submission Date
June 1, 2008
Acceptance Date
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Published in Issue
Year 2008 Volume: 3 Number: 1