title: Comprehensive 3-year study of the phenolic profile of Moroccan monovarietal virgin olive oils from the Meknès region.
abstract: The phenolic fraction of monovarietal virgin olive oils (VOOs) from the main Moroccan cultivar Picholine marocaine (142 samples from three different subareas of the Meknès region) was studied over three consecutive crop seasons (2011, 2012, and 2013) using a powerful LC-MS methodology. First, LC-ESI-TOF MS was used to get a comprehensive characterization of the phenolic fraction; afterward, LC-ESI-IT MS was utilized for further identification (MS/MS experiments) and quantitation purposes. A total of 28 phenolic compounds (and quinic acid) were determined, revealing the complex profile of Meknès VOO, composed, in order of abundance, by secoiridoids, phenolic alcohols, lignans, flavonoids, and phenolic acids. Tukey's test was applied to ascertain possible significant intraregional and/or interannual variations of the phenolic content of the Meknès VOOs under study. Results showed that the content of phenolic compounds was mainly related to the crop season.
authors.affiliation: †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
authors.forename: Aadil
authors.initials: A
authors.lastname: Bajoub
authors.affiliation: †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: Hurtado-Fernández
authors.affiliation: §Provincial Department of Agriculture of Azilal, P.O. Box 13, 22000 Azilal, Morocco.
authors.forename: El Amine
authors.initials: el A
authors.lastname: Ajal
authors.affiliation: #Agro-pôle Olivier, National School of Agriculture in Meknes, B.P. S/40, Meknès, Morocco.
authors.forename: Noureddine
authors.initials: N
authors.lastname: Ouazzani
authors.affiliation: †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Fernández-Gutiérrez
authors.affiliation: †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
authors.forename: Alegría
authors.initials: A
authors.lastname: Carrasco-Pancorbo
mesh_terms: D005638:Fruit / Q000737:chemistry / Q000254:growth & development; D015394:Molecular Structure; D031658:Olea / Q000737:chemistry / Q000254:growth & development; D000069463:Olive Oil; D010636:Phenols / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D012621:Seasons; D013030:Spain; D053719:Tandem Mass Spectrometry
chemical_list: D000069463:Olive Oil; D010636:Phenols; D010938:Plant Oils
keywords: Picholine marocaine; interannual and intraregional study; liquid chromatography−mass spectrometry; phenolic compounds; virgin olive oil