title: Identification of potent odorants in Chinese jasmine green tea scented with flowers of Jasminum sambac.
abstract: The odorants in Chinese jasmine green tea scented with jasmine flowers (Jasminum sambac) were separated from the infusion by adsorption to Porapak Q resin. Among the 66 compounds identified by GC and GC/MS, linalool (floral), methyl anthranilate (grape-like), 4-hexanolide (sweet), 4-nonanolide (sweet), (E)-2-hexenyl hexanoate (green), and 4-hydroxy-2,5-dimethyl-3(2H)-furanone (sweet) were extracted as potent odorants by an aroma extract dilution analysis and sensory analysis. The enantiomeric ratios of linalool in jasmine tea and Jasminum sambac were determined by a chiral analysis for the first time in this study: 81.6% ee and 100% ee for the (R)-(-)-configuration, respectively. The jasmine tea flavor could be closely duplicated by a model mixture containing these six compounds on the basis of a sensory analysis. The omission of methyl anthranilate and the replacement of (R)-(-)-linalool by (S)-(+)-linalool led to great changes in the odor of the model. These two compounds were determined to be the key odorants of the jasmine tea flavor.
authors.affiliation: Laboratory of Food Chemistry, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan.
authors.forename: Yuriko
authors.initials: Y
authors.lastname: Ito
authors.forename: Akio
authors.initials: A
authors.lastname: Sugimoto
authors.forename: Takami
authors.initials: T
authors.lastname: Kakuda
authors.forename: Kikue
authors.initials: K
authors.lastname: Kubota
mesh_terms: D000080462:Acyclic Monoterpenes; D000328:Adult; D002849:Chromatography, Gas; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D039821:Monoterpenes; D009812:Odorants; D029592:Oleaceae / Q000737:chemistry*; D012903:Smell; D013237:Stereoisomerism; D013662:Tea / Q000737:chemistry*; D013729:Terpenes / Q000032:analysis / Q000737:chemistry; D062367:ortho-Aminobenzoates / Q000032:analysis
chemical_list: D000080462:Acyclic Monoterpenes; D039821:Monoterpenes; D013662:Tea; D013729:Terpenes; D062367:ortho-Aminobenzoates; C038892:methyl anthranilate; C018584:linalool