S05 - Session P1 - Rose essential oil from organic roses crop of 'Crown Princess Margareta', 'Falstaff' and 'Brother Cadfael' cultivars

Authors: Ana Cornelia Butcaru *, Mariana Dumbrava, Violeta A. Ion, Liliana Aurelia Badulescu, Florin Stanica

Besides their high ornamental value, roses can be cultivated for the petal production as a major raw material for the production of essential oil with multiple uses. The present study, shows the first results on volatile organic compounds detected in three climbing rose cultivars from David Austin collection: 'Crown Princess Margareta', 'Falstaff' and 'Brother Cadfael'. The petals from organically grown plants on 3 double wire trellis in the Experimental Field of the Faculty of Horticulture, Bucharest, Romania were analysed at the Research Centre for Studies of Food Quality and Agricultural Products. The organic rose crop was established in 2015 on a total area of 1,350 m 2 and an organic technology was applied including mulching, fertilization, and pest and diseases control. The extraction of the volatile oils was carried out by distillation, using a Neo Clevenger system. The obtained oil samples were diluted in hexane and analysed using the gas chromatograph system coupled with a mass spectrometer - Agilent Series GC/MS consisting of Gas Chromatograph GC 7890B, MS 5977A system, and a GS Sampler 80 injector. 99.91% of the chemical composition for the 'Falstaff' cultivar, 97.94% for the 'Brother Cadfael', and 96.17% for the 'Crown Princess Margareta' was identified. Geraniol and cis-Geraniol/Nerol, compounds with significant pharmacological potential, had the highest values in all three cultivars. Heneicosane was presented in both 'Falstaff' and 'Brother Cadfael', while nonadecane was found only in 'Falstaff', with more than 5%.