title: Ultrasound induced green solvent extraction of oil from oleaginous seeds.
abstract: Ultrasound-assisted extraction of rapeseed oil was investigated and compared with conventional extraction for energy efficiency, throughput time, extraction yield, cleanness, processing cost and product quality. A multivariate study enabled us to define optimal parameters (7.7 W/cm(2) for ultrasonic power intensity, 40 °C for processing temperature, and a solid/liquid ratio of 1/15) for ultrasound-assisted extraction of oil from oilseeds to maximize lipid yield while reducing solvent consumption and extraction time using response surface methodology (RSM) with a three-variable central composite design (CCD). A significant difference in oil quality was noted under the conditions of the initial ultrasound extraction, which was later avoided using ultrasound in the absence of oxygen. Three concepts of multistage cross-current extraction were investigated and compared: conventional multistage maceration, ultrasound-assisted maceration and a combination, to assess the positive impact of using ultrasound on the seed oil extraction process. The study concludes that ultrasound-assisted extraction of oil is likely to reduce both economic and ecological impacts of the process in the fat and oil industry.
authors.affiliation: Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Extraction Team, 84000 Avignon, France.
authors.forename: Anne-Gaëlle
authors.initials: AG
authors.lastname: Sicaire
authors.affiliation: Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Extraction Team, 84000 Avignon, France.
authors.forename: Maryline Abert
authors.initials: MA
authors.lastname: Vian
authors.affiliation: Terres Inovia, Technical institute for oilseed crops, grain legumes and industrial hemp, 11 rue Monge, 33600 Pessac, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Fine
authors.affiliation: CREOL, 11 rue Monge, 33600 Pessac, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Carré
authors.affiliation: SAIPOL, boulevard Maritime, 76530 Grand-Couronne, France.
authors.forename: Sylvain
authors.initials: S
authors.lastname: Tostain
authors.affiliation: Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Extraction Team, 84000 Avignon, France. Electronic address: farid.chemat@univ-avignon.fr.
authors.forename: Farid
authors.initials: F
authors.lastname: Chemat
mesh_terms: D005229:Fatty Acids, Monounsaturated / Q000302:isolation & purification*; D000074262:Rapeseed Oil; D012639:Seeds / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013499:Surface Properties; D014465:Ultrasonics
chemical_list: D005229:Fatty Acids, Monounsaturated; D000074262:Rapeseed Oil; D012997:Solvents
keywords: Degradation; Extraction; Green impact; Oilseed; Ultrasound; Unit operation