title: Synthesis of volatile compounds of virgin olive oil is limited by the lipoxygenase activity load during the oil extraction process.
abstract: The aim of this work was to determine whether the lipoxygenase (LOX) activity is a limiting factor for the biosynthesis of virgin olive oil (VOO) volatile compounds during the oil extraction process. For this purpose, LOX activity load was modified during this process using exogenous LOX activity and specific LOX inhibitors on olive cultivars producing oils with different volatile profiles (Arbequina and Picual). Experimental data suggest that LOX activity is a limiting factor for the synthesis of the oil volatile fraction, this limitation being significantly higher in Picual cultivar than in Arbequina, in line with the lowest content of volatile compounds in the oils obtained from the former. Moreover, there is evidence that this limitation of LOX activity takes place mostly during the milling step in the process of olive oil extraction.
authors.affiliation: Department of Physiology and Technology of Plant Products, Instituto de la Grasa, CSIC, Padre García Tejero 4, 41012 Seville, Spain.
authors.forename: Araceli
authors.initials: A
authors.lastname: Sánchez-Ortiz
authors.forename: Carmen
authors.initials: C
authors.lastname: Romero-Segura
authors.forename: Carlos
authors.initials: C
authors.lastname: Sanz
authors.forename: Ana G
authors.initials: AG
authors.lastname: Pérez
mesh_terms: D005511:Food Handling; D008084:Lipoxygenase / Q000378:metabolism*; D031658:Olea / Q000737:chemistry / Q000201:enzymology*; D000069463:Olive Oil; D010938:Plant Oils / Q000032:analysis* / Q000302:isolation & purification; D010940:Plant Proteins / Q000378:metabolism*; D055549:Volatile Organic Compounds / Q000032:analysis / Q000378:metabolism*
chemical_list: D000069463:Olive Oil; D010938:Plant Oils; D010940:Plant Proteins; D055549:Volatile Organic Compounds; D008084:Lipoxygenase