Table of Contents
Organic Chemistry International
Volume 2010 (2010), Article ID 621967, 7 pages
http://dx.doi.org/10.1155/2010/621967
Research Article

Volatile Oil Constituents of Rosa canina L.: Quality As Affected by the Distillation Method

1Laboratoire des Substances Naturelles, Institut National de Recherche et d'Analyse Physico-chimique (INRAP), Technopôle de Sidi Thabet, Ariana 2020, Tunisia
2Département de Production Agricole, École Supérieure d'Agriculture de Mograne, Zaghouan 2021, Tunisia
3Département de Botanique et des Plantes d'Ornement, Institut National de Recherche Agronomique de Tunis, Tunis 1080, Tunisia

Received 30 September 2010; Revised 10 November 2010; Accepted 9 December 2010

Academic Editor: William N. Setzer

Copyright © 2010 Karim Hosni et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The volatile oils of R. canina flowers were isolated by hydrodistillation (HD) and traditional dry distillation (DD) and analyzed by HRGC-FID and GC-MS. Compared to HD, DD at 50°C leads to the isolation of high quality oil which contains the highest content of oxygenated compounds (83%). The main components are the 2-phenethyl alcohol and eugenol. The percentage of the 2-phenethyl alcohol, a highly desirable component in rose oil, was significantly higher (58.4%) in DD extract when compared to that of HD one (13.6%). As temperature increased (100°C) during DD, the oil quality decreased. The most significant changes were observed in 2-phenethyl alcohol percentage (4.5%). Moreover, an increase of alkanes/alkenes and the production of furan derivatives were observed. So, DD at moderate temperature (50°C) seemed more suitable to improve the volatile oil quality and hence, to make more value of R. canina.