| abstract |
(57) [Summary] [Problem] A characteristic fragrance, flavor, and flavor of optically active lactone which is an enantiomeric mixture of (R) -lactone and (S) -lactone. An application composition is provided. This fragrance / flavor / flavor imparting composition can be mass-produced by a simple process, and is used in foods, drinks, fragrances, cosmetics and tobacco. SOLUTION: General formula (I) Wherein n represents 1 or 2, and R represents a straight-chain saturated alkyl group having 1 to 9 carbon atoms, and (R) -lactone represented by the general formula (II): Wherein n is 1 or 2, and R is a straight-chain saturated alkyl group having 1 to 9 carbon atoms, which is a mixture of (S) -lactone enantiomers, A fragrance / flavor / flavor imparting composition containing isomers having an optical purity of 50% ee or more. |