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Classification of extra virgin olive oils according to the protected designation of origin, olive variety and geographical origin. 2008

Silvia López-Feria, and Soledad Cárdenas, and José Antonio García-Mesa, and Miguel Valcárcel
Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Córdoba, E-14071, Spain.

A headspace-mass spectrometry (HS-MS) coupling designed for the sensory characterization and classification of extra virgin olive oil on the basis of its protected designation of origin, olive variety and geographical origin is reported. The procedure involves the headspace generation and the direct injection of the homogenized gaseous phase into a mass spectrometer through a transfer line. The results obtained were chemometrically treated to achieve the best model capable of discriminating between the different olive oil categories. For this purpose, several procedures for variables selection, data pretreatments and unsupervised techniques were evaluated. In addition, K-nearest neighbor and soft independent modeling of class analogy algorithms were employed to the classification models building. Taking into account the prediction results obtained (ca. 87% of samples correctly classified and a specificity of ca. 97%), it can be concluded than the HS-MS coupling is, with an adequate chemometric treatment, an appropriate technique for routine control.

UI MeSH Term Description Entries
D010938 Plant Oils Oils derived from plants or plant products. Oils, Plant,Oils, Vegetable,Plant Oil,Vegetable Oil,Vegetable Oils,Oil, Plant,Oil, Vegetable
D011786 Quality Control A system for verifying and maintaining a desired level of quality in a product or process by careful planning, use of proper equipment, continued inspection, and corrective action as required. (Random House Unabridged Dictionary, 2d ed) Control, Quality,Controls, Quality,Quality Controls
D005638 Fruit The fleshy or dry ripened ovary of a plant, enclosing the seed or seeds. Berries,Legume Pod,Plant Aril,Plant Capsule,Aril, Plant,Arils, Plant,Berry,Capsule, Plant,Capsules, Plant,Fruits,Legume Pods,Plant Arils,Plant Capsules,Pod, Legume,Pods, Legume
D000069463 Olive Oil Oil extracted from fruit of the OLIVE TREE (genus Olea). Olive Oils,Oil, Olive,Oils, Olive
D013030 Spain Country located between France on the northeast and Portugal on the west and bordered by the Atlantic Ocean and the Mediterranean Sea. The capital is Madrid. Balearic Islands,Canary Islands
D013058 Mass Spectrometry An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers. Mass Spectroscopy,Spectrometry, Mass,Spectroscopy, Mass,Spectrum Analysis, Mass,Analysis, Mass Spectrum,Mass Spectrum Analysis,Analyses, Mass Spectrum,Mass Spectrum Analyses,Spectrum Analyses, Mass
D016000 Cluster Analysis A set of statistical methods used to group variables or observations into strongly inter-related subgroups. In epidemiology, it may be used to analyze a closely grouped series of events or cases of disease or other health-related phenomenon with well-defined distribution patterns in relation to time or place or both. Clustering,Analyses, Cluster,Analysis, Cluster,Cluster Analyses,Clusterings
D017753 Ecosystem A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed) Ecosystems,Biome,Ecologic System,Ecologic Systems,Ecological System,Habitat,Niche, Ecological,System, Ecological,Systems, Ecological,Biomes,Ecological Niche,Ecological Systems,Habitats,System, Ecologic,Systems, Ecologic
D025341 Principal Component Analysis Mathematical procedure that transforms a number of possibly correlated variables into a smaller number of uncorrelated variables called principal components. Analyses, Principal Component,Analysis, Principal Component,Principal Component Analyses
D031658 Olea A plant genus of the family Oleaceae. The olive fruit is the source of OLIVE OIL. Olive Tree,Olives,Common Olive Tree,Olea europaea,Common Olive Trees,Olive,Olive Tree, Common,Olive Trees,Olive Trees, Common,Tree, Common Olive,Tree, Olive,Trees, Common Olive,Trees, Olive

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