title: Analytical performance of three commonly used extraction methods for the gas chromatography-mass spectrometry analysis of wine volatile compounds.
abstract: The analytical performance of three extraction procedures based on cold liquid-liquid extraction using dicloromethane (LLE), solid phase extraction (SPE) using a styrene-divinylbenzene copolymer and headspace solid phase microextraction (SPME) using a carboxen-polydimethylsiloxane coated fibre has been evaluated based on the analysis of 30 representative wine volatile compounds. From the comparison of the three procedures, LLE and SPE showed very good linearity covering a wide range of concentrations of wine volatile compounds, low detection limits, high recovery for most of the volatile compounds under study and higher sensitivity compared to the headspace-SPME procedure. The latter showed in general, poor recovery for polar volatile compounds. Despite some drawbacks associated with the LLE and SPE procedures such as the more tedious sampling treatment and the use of organic solvents, the analytical performance of both procedures showed that they are more adequate for the analysis of wine volatiles.
authors.affiliation: Instituto de Fermentaciones Industriales (CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Andujar-Ortiz
authors.forename: M V
authors.initials: MV
authors.lastname: Moreno-Arribas
authors.forename: P J
authors.initials: PJ
authors.lastname: Martín-Alvarez
authors.forename: M A
authors.initials: MA
authors.lastname: Pozo-Bayón
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D016014:Linear Models; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D052616:Solid Phase Extraction / Q000379:methods; D052617:Solid Phase Microextraction / Q000379:methods; D055549:Volatile Organic Compounds / Q000032:analysis*; D014920:Wine / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds