title: Volatile constituents and key odorants in leaves, buds, flowers, and fruits of Laurus nobilis L.
abstract: The volatiles of fresh leaves, buds, flowers, and fruits from bay (Laurus nolilis L.) were isolated by solvent extraction and analyzed by capillary gas chromatography-mass spectrometry. Their odor quality was characterized by gas chomatography-olfactometry-mass spectrometry (HRGC-O-MS) and aroma extract dilution analysis (AEDA). In fresh bay leaves 1,8-cineole was the major component, together with alpha-terpinyl acetate, sabinene, alpha-pinene, beta-pinene, beta-elemene, alpha-terpineol, linalool, and eugenol. Besides 1,8-cineole and the pinenes, the main components in flowers were alpha-eudesmol, beta-elemene, and beta-caryophyllene, in fruits (E)-beta-ocimene and biclyclogermacrene, and in buds (E)-beta-ocimene and germacrene D. The aliphatic ocimenes and farnesenes were absent in leaves. By using HRGC-O-MS 21 odor compounds were identified in fresh leaves. Application of AEDA revealed (Z)-3-hexenal (fresh green), 1,8-cineole (eucalyptus), linalool (flowery), eugenol (clove), (E)-isoeugenol (flowery), and an unidentified compound (black pepper) with the highest flavor dilution factors. Differences between buds, flowers, fruits, and leaves with regard to the identified odor compounds are presented.
authors.affiliation: Faculty of Forestry, Zonguldak Karaelmas University, 74100 Bartin, Turkey. ayben_kilic@hotmail.com
authors.forename: Ayben
authors.initials: A
authors.lastname: Kilic
authors.forename: Harzemsah
authors.initials: H
authors.lastname: Hafizoglu
authors.forename: Hubert
authors.initials: H
authors.lastname: Kollmannsberger
authors.forename: Siegfried
authors.initials: S
authors.lastname: Nitz
mesh_terms: D003511:Cyclohexanols / Q000032:analysis; D000077591:Eucalyptol; D035264:Flowers / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D027442:Laurus / Q000737:chemistry*; D039821:Monoterpenes / Q000032:analysis; D009812:Odorants / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry*; D012621:Seasons; D014835:Volatilization
chemical_list: D003511:Cyclohexanols; D039821:Monoterpenes; D000077591:Eucalyptol