Floral Volatile Composition of Daisy Fleabane (Erigeron annuus (L.) Pers.)

The objective of this experiment is to understand the volatile composition of the essential oil from flower of daisy fleabane (Erigeron annuus (L.) Pers.). The essential oil was extracted using a steam distillation apparatus, collected by solid-phase microextraction, and analyzed by GC-MS. The yield of the essential oil was 0.22% and the fragrance was herbal, minty, oily and fruity. Twenty-eight constituents were identified from the essential oil: 16 hydrocarbons, 5 alcohols, 5 ethers, 1 nitrogen-containing compound and 1 acid. Major volatile compounds were 1H-cyclopenta[1,3] cyclopropa[1,2]benzene (32.9%), methyl-(Z)-dec-2-en-4,6-diynoate (16.1%), 3,7-dimethyl-(Z)-1,3,6- octatriene (15.1%), 1,2,3,4,4a,5,6,8a-octahydronaphthalene (6.6%), and 1-ethenyl-1-methyl-2,4-bis (1-methylethenyl)-[1S-(1a,2b,4b)]-cyclohexane (6.5%). The overall data showed that floral essential oil of daisy fleabane had unique chemicals with unique fragrance, suggesting the essential oil could be used as a raw material for the development of new fragrances.