Rosa damask

The complexity of the aqueous products situation can be illustrated by Rose Water. It is a long established product with a history of applications in cosmetics, skincare and culinary preparations. Initially it may be produced from different botanical species e.g. typically Wild rose (Rosa canina), Damask rose (Rosa damascena) and Cabbage rose (Rosa centifolia). 

Damascones. The damascones are isomers of the corresponding ionones in which the a,p-unsaturated function of the side chain has been transposed. They occur in rose oils and their name is derived from the Damask rose (Rosa damascena) in which they were first detected. They have powerful fruity odours with a hint of florality and rose character. 

C13H20O, Mr 192.30, isomers of ionone which differ only in the position of the ring double bond (a-, /3-, Y-, S-, and c-damascone). The name damascones or rose ketones is derived from their occurrence in the essential oil of damask rose (Rosa damascena). a-D. bp. 77-80°C (0.13 Pa), [alg +487° (CHCI3) /5-D. bp. 52 °C (0.13 Pa). D. possess the common olfactory feature of a narcotic-herby odor of exotic flowers with an undertone resembling black currents. Although a- and /3-D. in rose oil have a combined content of merely ca. 0.15%, they determine the basic odor of the oil (olfactory threshold 0.009 ppb). D. occur in other flower oils as well as in tea, certain tobacco, and fruit aromas, e.g., apples and raspberries, a- and /3-D. are in-... 

The Damask rose (Rosa damascena) is also known as the "Rose of Kazan lak" (a town in Bulgaria), and since the 17th cen Wry it has been the source of Bulgarian rose oil. 

Damascones The first member of this family to be identified was p-damascenone (343). It was isolated from the Damask rose, Rosa damascena, the oil of which contains 0.05% of it (418) and the structure was confirmed by synthesis (419). Since then, damascones... 

---