title: Low-resolution gas-phase FT-IR method for the determination of the limonene/carvone ratio in supercritical CO2-extracted caraway fruit oils.
abstract: A low-resolution gas-phase FT-IR method for the fast analysis of supercritical CO2-extracted caraway fruit oils has been developed. The limonene/carvone ratio of extraction product was determined within seconds, yielding a coefficient of variation of <5% (n = 10). A selection of experimental parameters is discussed on the basis of the analysis of 52 extracted samples. GC-FID was used as a reference method. A correlation of 0.983 (n = 24) between the two methods was observed. This method is suitable for the analysis of a large number of caraway fruit extracts due to its speed, repeatability, and minimum sample preparation.
authors.affiliation: Department of Applied Physics and Department of Biochemistry and Food Chemistry, University of Turku, FIN-20014 Turku, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Ahro
authors.forename: M
authors.initials: M
authors.lastname: Hakala
authors.forename: J
authors.initials: J
authors.lastname: Sihvonen
authors.forename: J
authors.initials: J
authors.lastname: Kauppinen
authors.forename: H
authors.initials: H
authors.lastname: Kallio
mesh_terms: D002245:Carbon Dioxide / Q000302:isolation & purification*; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D000077222:Limonene; D039821:Monoterpenes; D010938:Plant Oils / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013729:Terpenes; D029974:Carum
chemical_list: D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D039821:Monoterpenes; D010938:Plant Oils; D013729:Terpenes; D002245:Carbon Dioxide; C006923:carvone; D000077222:Limonene; C104525:caraway oil