title: Chemical Composition and Aroma Evaluation of Essential Oils from Skunk Cabbage (Symplocarpus foetidus).
abstract: Two sample preparation methods, namely hydrodistillation (HD) and solvent-assisted flavor evaporation (SAFE), have been used to investigate the essential oils of the aerial parts (leaves and stems) of Symplocarpus foetidus, a plant with a characteristic odor, by gas chromatography mass spectrometry (GC-MS). Characteristic aroma-active compounds in the oils were detected by GC-Olfactometry (GC-O) and aroma extract dilution analysis (AEDA). From the HD method, the main compounds in the oil were found to be p-vinyl-guaiacol (15.5%), 2-pentyl-furan (13.4%), and (Z)-ligustilide (9.5%). From the SAFE method, the main compounds were 2-butoxy-ethanol (49.6%), ethyl-pentanoate (4.5%), and mesitylene (4.0%). In HD oil, the most intense aroma-active compounds were 2-pentyl-furan (flavor dilution factor (FD) = 32, odor activity value (OAV) = 57), p-vinyl-guaiacol (FD = 16, OAV = 41), and dimethyl disulfide (FD = 16, OAV = 41). In SAFE oil, the main aroma-active compounds were 2-butoxy ethanol (FD = 32, OAV = 16), and 2-methoxy thiazole (FD = 32, OAV = 25).
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University).
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Miyazawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakahashi
authors.forename: Yusei
authors.initials: Y
authors.lastname: Kashima
authors.forename: Ryota
authors.initials: R
authors.lastname: Motooka
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Hara
authors.forename: Hiroki
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Yoshii
authors.forename: Atsushi
authors.initials: A
authors.lastname: Usami
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Marumoto
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives / Q000032:analysis / Q000302:isolation & purification; D029064:Araceae / Q000737:chemistry*; D001555:Benzene Derivatives / Q000032:analysis / Q000302:isolation & purification; D057168:Distillation / Q000379:methods; D004220:Disulfides / Q000032:analysis / Q000302:isolation & purification; D005026:Ethylene Glycols / Q000032:analysis / Q000302:isolation & purification; D005663:Furans / Q000032:analysis / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D006139:Guaiacol / Q000032:analysis / Q000302:isolation & purification; D007201:Indicator Dilution Techniques; D009812:Odorants / Q000032:analysis*; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D064367:Olfactometry / Q000379:methods; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry* / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry; D014631:Valerates / Q000032:analysis / Q000302:isolation & purification; D014835:Volatilization
chemical_list: D001555:Benzene Derivatives; D004220:Disulfides; D005026:Ethylene Glycols; D005663:Furans; D009822:Oils, Volatile; D010938:Plant Oils; D014631:Valerates; C021181:dimethyl disulfide; C027820:ligustilide; D006139:Guaiacol; C010219:mesitylene; C017096:n-butoxyethanol; D015107:4-Butyrolactone; C039281:furan