title: Characteristic odor components of Citrus sphaerocarpa Tanaka (Kabosu) cold-pressed peel oil.
abstract: The volatile components of Citrus sphaerocarpa Tanaka (Kabosu) cold-pressed peel oil were investigated by chemical and sensory analyses. Monoterpene hydrocarbons (more than 94.6%) were predominant in Kabosu peel oil, with limonene and myrcene accounting for the major proportions (70.5% and 20.2%, respectively). The Kabosu oxygenated fraction was characterized by quantitative abundance in aldehydes and a relatively wide variety of alcohols. The weight percentages of aldehydes, alcohols, and esters in Kabosu cold-pressed oil were 1.3%, 0.1%, and 0.1%, respectively. Aroma extract dilution analysis was employed for determination of the odors of Kabosu volatile components, flavor dilution factors, and relative flavor activities. Gas chromatography/olfactometry using Kabosu cold-pressed oil and its oxygenated fraction completed by a chiral analysis revealed that (R)-(+)-citronellal is a characteristic element of Kabosu peel oil odor. Careful sniff testing demonstrated that aqueous solutions of both 0.25% and 0.016% (R)-(+)-citronellal gave an odor similar to that of Kabosu.
authors: Department of Bioresources Science, Faculty of Agriculture, Kochi University, B-200 Monobe, Nankoku, Kochi 783-8502, Japan.
authors: Nguyen Thi
authors: NT
authors: Minh Tu
authors: Yuji
authors: Y
authors: Onishi
authors: Hyang-Sook
authors: HS
authors: Choi
authors: Yusuke
authors: Y
authors: Kondo
authors: Solomon Mitiku
authors: SM
authors: Bassore
authors: Hiroyuki
authors: H
authors: Ukeda
authors: Masayoshi
authors: M
authors: Sawamura
mesh_terms: D000080462:Acyclic Monoterpenes; D000438:Alcohols / Q000032:analysis; D000447:Aldehydes / Q000032:analysis; D002849:Chromatography, Gas; D002957:Citrus / Q000737:chemistry*; D003080:Cold Temperature; D053138:Cyclohexenes; D005638:Fruit / Q000737:chemistry; D000077222:Limonene; D039821:Monoterpenes; D009812:Odorants; D012903:Smell; D013729:Terpenes / Q000032:analysis
chemical_list: D000080462:Acyclic Monoterpenes; D000438:Alcohols; D000447:Aldehydes; D053138:Cyclohexenes; D039821:Monoterpenes; D013729:Terpenes; C008574:beta-myrcene; D000077222:Limonene