title: One input-class and two input-class classifications for differentiating olive oil from other edible vegetable oils by use of the normal-phase liquid chromatography fingerprint of the methyl-transesterified fraction.
abstract: A new method for differentiation of olive oil (independently of the quality category) from other vegetable oils (canola, safflower, corn, peanut, seeds, grapeseed, palm, linseed, sesame and soybean) has been developed. The analytical procedure for chromatographic fingerprinting of the methyl-transesterified fraction of each vegetable oil, using normal-phase liquid chromatography, is described and the chemometric strategies applied and discussed. Some chemometric methods, such as k-nearest neighbours (kNN), partial least squared-discriminant analysis (PLS-DA), support vector machine classification analysis (SVM-C), and soft independent modelling of class analogies (SIMCA), were applied to build classification models. Performance of the classification was evaluated and ranked using several classification quality metrics. The discriminant analysis, based on the use of one input-class, (plus a dummy class) was applied for the first time in this study.
authors.affiliation: Department of Analytical Chemistry, University of Granada, c/ Fuentenueva, s.n., E-18071 Granada, Spain. Electronic address: amariajc@ugr.es.
authors.forename: Ana M
authors.initials: AM
authors.lastname: Jiménez-Carvelo
authors.affiliation: Department of Analytical Chemistry, University of Granada, c/ Fuentenueva, s.n., E-18071 Granada, Spain.
authors.forename: Estefanía
authors.initials: E
authors.lastname: Pérez-Castaño
authors.affiliation: Department of Analytical Chemistry, University of Granada, c/ Fuentenueva, s.n., E-18071 Granada, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: González-Casado
authors.affiliation: Department of Analytical Chemistry, University of Granada, c/ Fuentenueva, s.n., E-18071 Granada, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Cuadros-Rodríguez
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D016002:Discriminant Analysis; D016018:Least-Squares Analysis; D000069463:Olive Oil / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*
chemical_list: D000069463:Olive Oil; D010938:Plant Oils
keywords: Chromatographic fingerprinting; Methyl-transesterified fraction; Olive oil authentication; One input-class and two input-class classification