title: Effect of oxidized arachidonic acid and hexanal on the mouse taste perception of bitterness and umami.
abstract: The oxidization of fatty acids generates many volatile compounds forming an aroma, but little is known whether mammals use gustatory sense to detect the oxidized products as a taste or only use olfactory sense to detect as an aroma. We examined in this study the effect of aqueous extracts of the compounds from autoxidized arachidonic acid (AA) ethyl ester or hexanal which is the predominant component generated from oxidized AA by the anosmic mouse licking performance to a tastant. The addition of the water extract from oxidized AA or hexanal to a quinine hydrochloride (QHCl) solution decreased the anosmic mice licking frequency at several concentrations of QHCl. Hexanal also reduced the licking frequency of anosmic mice conditioned to avoid MSG at several concentrations of monosodium glutamate (MSG). These results suggest that hexanal would affect mouse taste perception to QHCl and MSG via the gustatory sensation.
authors.affiliation: Laboratory of Food Function, Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan.
authors.forename: Susumu
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Hidenori
authors.initials: H
authors.lastname: Fujiwara
authors.forename: Ikukazu
authors.initials: I
authors.lastname: Tashima
authors.forename: Daigo
authors.initials: D
authors.lastname: Iwanaga
authors.forename: Hideki
authors.initials: H
authors.lastname: Ushio
mesh_terms: D000447:Aldehydes / Q000494:pharmacology*; D000818:Animals; D016718:Arachidonic Acid / Q000494:pharmacology*; D051379:Mice; D000857:Olfaction Disorders / Q000188:drug therapy; D010084:Oxidation-Reduction; D011803:Quinine / Q000494:pharmacology; D012903:Smell / Q000187:drug effects; D012970:Sodium Glutamate / Q000494:pharmacology; D012996:Solutions; D013649:Taste / Q000187:drug effects; D055697:Taste Perception / Q000187:drug effects*; D014867:Water
chemical_list: D000447:Aldehydes; D012996:Solutions; D014867:Water; D016718:Arachidonic Acid; C010463:n-hexanal; D011803:Quinine; D012970:Sodium Glutamate