title: Characteristic odor components of essential oils from Eurya japonica.
abstract: The chemical compositions of essential oils from the flower and aerial parts (i.e., leaf and branch) of Eurya japonica were determined and quantified using gas chromatography-mass spectrometry (GC-MS). A total of 87 and 50 compounds were detected in the oils from the flower and aerial parts, respectively. The main compounds of the flower oil were linalool (14.0%), (9Z)-tricosene (12.0%), and nonanal (7.4%). In the oil from the aerial parts, linalool (37.7%), α-terpineol (13.5%), and geraniol (9.6%) were detected. In the oils from the flower and aerial parts, 13 and 8 aroma-active compounds were identified by GC-olfactometry (GC-O) analysis, respectively. The key aroma-active compounds of the flower oil were heptanal [fatty, green, flavor dilution (FD) = 128, odor activity value (OAV) = 346], nonanal (sweet, citrus, FD = 128, OAV = 491), and eugenol (sweet, spicy, FD = 64, OAV = 62): in the oil from the aerial parts, the key aroma-active compounds were linalool (sweet, citrus, FD = 64, OAV = 95), (E)-β-damascenone (sweet, FD = 256, OAV = 4000), and (E)-β-ionone (floral, violet, FD = 128, OAV = 120). This study revealed that nonanal and eugenol impart the sweet, citrus, and spicy odor of the flower oil, while (E)-β-damascenone and (E)-β-ionone contribute the floral and sweet odor of the oil from the aerial parts.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University).
authors.forename: Ryota
authors.initials: R
authors.lastname: Motooka
authors.forename: Atsushi
authors.initials: A
authors.lastname: Usami
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakahashi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Koutari
authors.forename: Satoshi
authors.initials: S
authors.lastname: Nakaya
authors.forename: Ryoyu
authors.initials: R
authors.lastname: Shimizu
authors.forename: Kaoru
authors.initials: K
authors.lastname: Tsuji
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Marumoto
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Miyazawa
mesh_terms: D000080462:Acyclic Monoterpenes; D000447:Aldehydes / Q000032:analysis / Q000302:isolation & purification; D000475:Alkenes / Q000032:analysis / Q000302:isolation & purification; D000081005:Cyclohexane Monoterpenes; D003510:Cyclohexanes / Q000032:analysis / Q000302:isolation & purification; D053138:Cyclohexenes / Q000032:analysis / Q000302:isolation & purification; D005054:Eugenol / Q000032:analysis / Q000302:isolation & purification; D035264:Flowers; D008401:Gas Chromatography-Mass Spectrometry; D039821:Monoterpenes / Q000032:analysis / Q000302:isolation & purification; D045792:Norisoprenoids / Q000032:analysis / Q000302:isolation & purification; D009812:Odorants; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry; D064367:Olfactometry; D018515:Plant Leaves; D018547:Plant Stems; D013729:Terpenes / Q000032:analysis / Q000302:isolation & purification; D028242:Theaceae / Q000737:chemistry*
chemical_list: D000080462:Acyclic Monoterpenes; D000447:Aldehydes; D000475:Alkenes; D000081005:Cyclohexane Monoterpenes; D003510:Cyclohexanes; D053138:Cyclohexenes; D039821:Monoterpenes; D045792:Norisoprenoids; D009822:Oils, Volatile; D013729:Terpenes; C502869:damascenone; C016775:alpha-terpineol; C008664:nonanal; D005054:Eugenol; C046204:heptanal; C018584:linalool; C007836:geraniol