title: Determination of volatile compounds by GC-IMS to assign the quality of virgin olive oil.
abstract: The characterisation of different olive oil categories (extra virgin, virgin and lampante) using Ion Mobility Spectrometry (IMS) was improved by replacing the multicapillary column (MCC) with a capillary column (CC). The data obtained with MCC-IMS and CC-IMS were evaluated, studying both the global and the specific information obtained after the analysis of the volatile fraction of olive oils. A better differentiation of the oil categories was obtained employing CC vs MCC, since the classification percentage obtained with the CC-IMS was 92% as opposed to 87% obtained with MCC-IMS; although in productivity analytical terms, MCC offer a faster analysis than GC. The specific information obtained was also used to build a database, with a view to facilitating the characterization of specific attributes of olive oils. A total of 26 volatile metabolites (aldehydes, ketones, alcohols and esters) were identified. Finally, as revealed by an ANOVA test, some volatiles differed markedly in content among the different categories of oil. The data obtained confirms the potential of IMS as a reliable analytical screening technique, which can be used to assign the correct category to an olive oil sample.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Cordoba, Andalusian Institute of Fine Chemistry and Nanochemistry, International Agrifood Campus of Excellence (ceiA3), Annex C3 Building, Campus of Rabanales, E-14071 Córdoba, Spain.
authors.forename: Rocío
authors.initials: R
authors.lastname: Garrido-Delgado
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Cordoba, Andalusian Institute of Fine Chemistry and Nanochemistry, International Agrifood Campus of Excellence (ceiA3), Annex C3 Building, Campus of Rabanales, E-14071 Córdoba, Spain.
authors.forename: María del Mar
authors.initials: Mdel M
authors.lastname: Dobao-Prieto
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Cordoba, Andalusian Institute of Fine Chemistry and Nanochemistry, International Agrifood Campus of Excellence (ceiA3), Annex C3 Building, Campus of Rabanales, E-14071 Córdoba, Spain.
authors.forename: Lourdes
authors.initials: L
authors.lastname: Arce
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Cordoba, Andalusian Institute of Fine Chemistry and Nanochemistry, International Agrifood Campus of Excellence (ceiA3), Annex C3 Building, Campus of Rabanales, E-14071 Córdoba, Spain. Electronic address: qa1meobj@uco.es.
authors.forename: Miguel
authors.initials: M
authors.lastname: Valcárcel
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D000069463:Olive Oil / Q000737:chemistry* / Q000145:classification; D011786:Quality Control; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D000069463:Olive Oil; D055549:Volatile Organic Compounds
keywords: Gas chromatography; Ion mobility spectrometry; Metabolomic; Olive oil; Volatile compounds