title: Olive mill wastewater microconstituents composition according to olive variety and extraction process.
abstract: Olive oil production yields a considerable amount of wastewater, a powerful pollutant that is currently discarded but could be considered as a potential source of valuable natural products due to its content in phenolic compounds and other natural antioxidants. The aim of this work was to explore the variability in olive mill wastewater composition from Algerian olive oil mills considering extraction processes (traditional discontinuous press vs 3-phases centrifugal system) and olive varieties (Azerraj, Sigoise, Chemlal). Whereas pH, dry or organic matter content didn't vary, there was a significant difference in ash content according to extraction process and olive variety. Carotenoid content was 2.2-fold higher with 3-phases than with press systems whereas tocopherol content was not significantly different. Among the phenolic compounds quantified, tyrosol was usually the most abundant whereas oleuropein concentrations were highly variable. Differences in phenolic compound concentrations were more pronounced between olive varieties than between processes.
authors.affiliation: INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France.
authors.forename: Moufida
authors.initials: M
authors.lastname: Aggoun
authors.affiliation: Département des Sciences de la Nature et de la Vie, Université Larbi Ben M'Hidi, Oum El Bouaghi, Algeria.
authors.forename: Rabah
authors.initials: R
authors.lastname: Arhab
authors.affiliation: INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France.
authors.forename: Agnès
authors.initials: A
authors.lastname: Cornu
authors.affiliation: INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France.
authors.forename: Josiane
authors.initials: J
authors.lastname: Portelli
authors.affiliation: Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires, INATAA, Université Frères Mentouri-Constantine, route de Ain El Bey, 25000 Constantine, Algeria.
authors.forename: Malika
authors.initials: M
authors.lastname: Barkat
authors.affiliation: INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France. Electronic address: benoit.graulet@clermont.inra.fr.
authors.forename: Benoît
authors.initials: B
authors.lastname: Graulet
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000302:isolation & purification; D002338:Carotenoids / Q000032:analysis* / Q000302:isolation & purification; D031658:Olea / Q000737:chemistry*; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification; D062065:Wastewater / Q000032:analysis / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D002338:Carotenoids; D010636:Phenols; D062065:Wastewater
keywords: Carotenoids; Olive milling; Olive variety; Olive wastewater; Phenolic compounds; Tocopherols; all-trans-beta-carotene (PubChem CID: 5280489); alpha-tocopherol (PubChem CID: 14985); caffeic acid (PubChem CID: 689043); gallic acid (PubChem CID: 370); hydroxytyrosol (PubChem CID: 82755); lutein (PubChem CID: 6433159); luteolin (PubChem CID: 5280445); oleuropein (PubChem CID: 5281544); tyrosol (PubChem CID: 10393); zeaxanthin (PubChem CID: 5280899)