title: Volatile Compounds with Characteristic Odor of Essential Oil from Magnolia obovata Leaves by Hydrodistillation and Solvent-assisted Flavor Evaporation.
abstract: The present study focuses on the volatile compounds with characteristic odor of essential oil from the leaves of Magnolia obovata by hydrodistillation (HD) and solvent-assisted flavor evaporation (SAFE) method. Eighty-seven compounds, representing 98.0% of the total oil, were identified using HD. The major compounds of HD oil were (E)-β-caryophyllene (23.7%), α-humulene (11.6%), geraniol (9.1%), and borneol (7.0%). In SAFE oil, fifty-eight compounds, representing 99.7% of the total oil, were identified. The main compounds of SAFE oil were (E)-β-caryophyllene (48.9%), α-humulene (15.7%), and bicyclogermacrene (4.2%). In this study, we newly identified eighty-five compounds of the oils from M. obovata leaves. These oils were also subjected to aroma evaluation by gas chromatography-olfactometry (GC-O) and aroma extract dilution analysis (AEDA). As a result, twenty-four (HD) and twenty-five (SAFE) aroma-active compounds were detected. (E)-β-Caryophyllene, α-humulene, linalool, geraniol, 1,8-cineole, and bicyclogermacrene were found to impart the characteristic odor of M. obovata leaves. These results imply that the oils of M. obovata leaves must be investigated further to clarify their potential application in the food and pharmaceutical industries.
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: Yoshimi
authors.initials: Y
authors.lastname: Nakashima
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakahashi
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Hara
authors.forename: Hiroki
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Atsushi
authors.initials: A
authors.lastname: Usami
authors.forename: Warinthorn
authors.initials: W
authors.lastname: Chavasiri
mesh_terms: D000080462:Acyclic Monoterpenes; D001892:Camphanes / Q000302:isolation & purification; D002849:Chromatography, Gas; D003511:Cyclohexanols / Q000302:isolation & purification; D057168:Distillation / Q000379:methods*; D000077591:Eucalyptol; D031566:Magnolia / Q000737:chemistry*; D000081222:Monocyclic Sesquiterpenes; D039821:Monoterpenes / Q000302:isolation & purification; D009812:Odorants; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification*; D064367:Olfactometry; D018515:Plant Leaves / Q000737:chemistry; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000302:isolation & purification; D012997:Solvents; D013729:Terpenes / Q000302:isolation & purification; D014835:Volatilization; D014867:Water
chemical_list: D000080462:Acyclic Monoterpenes; D001892:Camphanes; D003511:Cyclohexanols; D000081222:Monocyclic Sesquiterpenes; D039821:Monoterpenes; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D012997:Solvents; D013729:Terpenes; D014867:Water; C042686:humulene; C024714:caryophyllene; C007836:geraniol; C022871:isoborneol; D000077591:Eucalyptol