Friday, January 8, 2016

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Main constituents
The essential oil from the leaves of long coriander is rich in ali­phatic aldehydes, most of which are α,β unsaturated. The impact com­pound is E-2-dodecenal (60%), further­more 2,3,6-trimethyl­benz­aldehyde (10%), dodecanal (7%) and E-2-tridecenal (5%) have been identi­fied. Ali­phatic aldehydes appear also in other spices with coriander-like scent (e. g., Viet­namese coriander).

Yet another essential oil can be obtained from the root; in the root oil, unsaturated alicyclic or aromatic aldehydes dominate (2,3,6-trimethyl­benz­aldehyde 40%, 2-formyl 1,1,5-trimethyl cyclo­hexa-2,5-dien-4-ol 10%, 2-formyl 1,1,5-trimethyl cyclo­hexa-2,4-dien-6-ol 20%, 2,3,4-trimethyl­benz­alde­hyde).

In the essen­tial oil from the seeds, sesqui­terpenoids (carotol 20%, β-farnesene 10%), phenyl­propanoids (anethole) and mono­terpenes (α-pinene) were found, but no aldehydes.