Essential oil composition and in vivo volatiles emission by different parts of Coleostephus myconis capitula.
The essential oil obtained by hydrodistillation of the flowering capitula of Coleostephus myconis (syn. Chrysanthemum myconis) was constituted almost exclusively of oxygenated sesquiterpenes (85.8%). The main constituent was T-cadinol (66.2%), followed by valeranone (8.2%), germacrene D (6.0%) and alpha-cadinol (4.6%). By mean of the SPME technique, the volatiles emitted in vivo by the whole capitula and by tubular and ligulate florets have been identified. Many differences were evidenced among the different organs and with respect to the essential oil.
Flamini
Guido
G
Dipartimento di Scienze Farmaceutiche, sede Chimica Bioorganica e Biofarmacia, Via Bonanno 33, 56126 Pisa, Italy. flamini@farm.unipi.it
Cioni
Pier Luigi
PL
Maccioni
Simonetta
S
Baldini
Rosa
R
D019659:Asteraceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000032:analysis*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000032:analysis; D045788:Sesquiterpenes, Germacrane / Q000032:analysis
D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D045788:Sesquiterpenes, Germacrane; C016179:valeranone; C072576:T-cadinol; C027259:germacrene D