title: First identification of O,S-diethyl Thiocarbonate in Indian Cress absolute and odor evaluation of its synthesized homologues by GC-sniffing.
abstract: Indian cress (Tropaeolum majus L.) absolute was studied by GC-olfactometry (VIDEO-Sniff method) in order to identify odor-active aroma compounds. Because of its fruity-sulfury odor note, a compound that has never been identified in plant extracts before stood out: O,S-diethyl thiocarbonate, present at 0.1% (percentage of the total GC/FID area) in the extract. GCxGC-TOFMS allowed for a clean mass spectrum to be obtained, and isolation by preparative GC followed by NMR studies allowed its identification. Here, we report on the first detection of O,S-diethyl thiocarbonate in Indian cress absolute by GC-olfactometry/VIDEO-Sniff and on its isolation and identification. The synthesis and odor evaluation of its homologues are presented.
authors.affiliation: LCMBA, UMR CNRS 6001, Universite de Nice-Sophia Antipolis, Parc Valrose, Nice Cedex 2, France.
authors.forename: Katharina
authors.initials: K
authors.lastname: Breme
authors.forename: Nadine
authors.initials: N
authors.lastname: Guillamon
authors.forename: Xavier
authors.initials: X
authors.lastname: Fernandez
authors.forename: Pascal
authors.initials: P
authors.lastname: Tournayre
authors.forename: Hugues
authors.initials: H
authors.lastname: Brevard
authors.forename: Daniel
authors.initials: D
authors.lastname: Joulain
authors.forename: Jean Louis
authors.initials: JL
authors.lastname: Berdagué
authors.forename: Uwe J
authors.initials: UJ
authors.lastname: Meierhenrich
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D004338:Drug Combinations; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008276:Magnesium Hydroxide / Q000032:analysis* / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D009812:Odorants / Q000032:analysis*; D012841:Simethicone / Q000032:analysis* / Q000138:chemical synthesis; D012903:Smell; D032388:Tropaeolum / Q000737:chemistry*
chemical_list: D004338:Drug Combinations; D012841:Simethicone; D008276:Magnesium Hydroxide