title: Olive oil pilot-production assisted by pulsed electric field: impact on extraction yield, chemical parameters and sensory properties.
abstract: The impact of the use of pulsed electric field (PEF) technology on Arroniz olive oil production in terms of extraction yield and chemical and sensory quality has been studied at pilot scale in an industrial oil mill. The application of a PEF treatment (2 kV/cm; 11.25 kJ/kg) to the olive paste significantly increased the extraction yield by 13.3%, with respect to a control. Furthermore, olive oil obtained by PEF showed total phenolic content, total phytosterols and total tocopherols significantly higher than control (11.5%, 9.9% and 15.0%, respectively). The use of PEF had no negative effects on general chemical and sensory characteristics of the olive oil, maintaining the highest quality according to EU legal standards (EVOO; extra virgin olive oil). Therefore, PEF could be an appropriate technology to improve olive oil yield and produce EVOO enriched in human-health-related compounds, such as polyphenols, phytosterols and tocopherols.
authors.affiliation: AZTI-Tecnalia, Food Research Division, Parque Tecnológico de Bizkaia, Astondo Bidea Edificio 609, 48160 Derio, Bizkaia, Spain. Electronic address: epuertolas@azti.es.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Puértolas
authors.affiliation: AZTI-Tecnalia, Food Research Division, Parque Tecnológico de Bizkaia, Astondo Bidea Edificio 609, 48160 Derio, Bizkaia, Spain.
authors.forename: Iñigo
authors.initials: I
authors.lastname: Martínez de Marañón
mesh_terms: D004560:Electricity; D005511:Food Handling; D006801:Humans; D031658:Olea / Q000737:chemistry*; D000069463:Olive Oil; D010840:Phytosterols / Q000032:analysis; D010938:Plant Oils / Q000032:analysis*; D059808:Polyphenols / Q000032:analysis; D024505:Tocopherols / Q000032:analysis
chemical_list: D000069463:Olive Oil; D010840:Phytosterols; D010938:Plant Oils; D059808:Polyphenols; D024505:Tocopherols
keywords: Alpha-tocopherol (PubChem CID: 14985); Beta-sitosterol (PubChem CID: 222284); Beta-tocopherol (PubChem CID: 6857447); Campesterol (PubChem CID: 5283637); Delta5-avenasterol (PubChem CID: 5281326); Electric field; Extraction yield; Gamma-tocopherol (PubChem CID: 92729); Mass transfer; Olive oil; PEF; Phenols; Phytosterols; Tocopherols