title: Evaluation of the composition of vine shoots and oak chips for oenological purposes by superheated liquid extraction and high-resolution liquid chromatography-time-of-flight/mass spectrometry analysis.
abstract: Vine shoots are characterized in this research and compared to oak chips, frequently employed in the aging of wine or spirits. For this purpose, liquid chromatography-diode array detection and liquid chromatography-time-of-flight/mass spectrometry (LC-TOF/MS) analyses of hydroalcoholic extracts from vine shoots pertaining to 18 different vine varieties and from five varieties of oak chips have been carried out. The concentrations of a representative panel of interesting compounds from an oenological point of view have been compared in the extracts, finding similarity patterns for many of them. The analysis by LC-TOF/MS in high accuracy mode has led to the identification of numerous compounds in the hydroalcoholic extracts. The statistical analysis has enabled identification of the vine-shoot varieties providing extracts with more similar composition to that given by extracts from oak chips. Therefore, these vine-shoots varieties are suitable to be presented as an alternative to the use of oak barrels or oak chips in the aging process of wine and spirits.
authors.affiliation: Department of Analytical Chemistry, Institute of Biomedical Research Maimónides (IMIBIC), Reina Sofía Hospital, University of Córdoba, Córdoba, Spain.
authors.forename: M Pilar
authors.initials: MP
authors.lastname: Delgado de la Torre
authors.forename: Feliciano
authors.initials: F
authors.lastname: Priego-Capote
authors.forename: María Dolores
authors.initials: MD
authors.lastname: Luque de Castro
mesh_terms: D005591:Chemical Fractionation; D002853:Chromatography, Liquid; D061353:Food Storage / Q000295:instrumentation*; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000032:analysis* / Q000302:isolation & purification; D029963:Quercus / Q000737:chemistry*; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*; D014934:Wood / Q000737:chemistry
chemical_list: D010936:Plant Extracts