title: Flash Thermal Conditioning of Olive Pastes during the Oil Mechanical Extraction Process: Cultivar Impact on the Phenolic and Volatile Composition of Virgin Olive Oil.
abstract: The concentration of phenolic and volatile compounds in virgin olive oil (VOO) is closely related to the different operative conditions applied to the mechanical extraction process of the olive oil. However, the great qualitative and quantitative variability of these compounds indicates an important role played by genetic and agronomic aspects. A heat exchanger was placed in front of a traditional, covered malaxer to study the impact of flash thermal conditioning (FTC) of olive paste on the quality of VOO, which is highly influenced by phenolic release and aroma generation. The VOO flash thermal conditioning of five major Italian cultivars showed a higher concentration of phenols (range of increase percentage, 9.9-37.3%) compared to the control trials, whereas the FTC treatment featured a differentiated impact on the volatile fractions, associated with the genetic origins of the olives.
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Veneziani
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Sonia
authors.initials: S
authors.lastname: Esposto
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Agnese
authors.initials: A
authors.lastname: Taticchi
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Selvaggini
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Stefania
authors.initials: S
authors.lastname: Urbani
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Ilona
authors.initials: I
authors.lastname: Di Maio
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Beatrice
authors.initials: B
authors.lastname: Sordini
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via S. Costanzo, 06126 Perugia, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Servili
mesh_terms: D005511:Food Handling; D005638:Fruit / Q000737:chemistry; D006358:Hot Temperature; D055595:Mechanical Phenomena; D031658:Olea / Q000737:chemistry*; D000069463:Olive Oil / Q000737:chemistry* / Q000302:isolation & purification; D010636:Phenols / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D000069463:Olive Oil; D010636:Phenols; D055549:Volatile Organic Compounds
keywords: flash thermal conditioning; genetic origin; phenols; quality; virgin olive oil; volatile compounds