title: A novel process for preparing low-fat peanuts: Optimization of the oil extraction yield with limited structural and organoleptic damage.
abstract: The main purpose of this study was to extract the maximum amount of oil from peanuts without causing major damage and preserving their organoleptic quality after defatting. Accordingly, a successful, healthy, eco-friendly and economic defatting process for peanuts was implemented using mechanical oil expression, which was optimized by means of Response Surface Methodology. The results demonstrated that maximum extraction yields were obtained at a low initial moisture content (5-7% d.b.). Defatting and deformation ratios were mostly affected by the pressure and water content with high correlation coefficients (98.4% and 97.5%, respectively), and overall acceptability decreased following higher oil extraction yields. It was concluded that the optimum values for the product moisture content, pressure, and pressing duration were 5% d.b., 9.7 MPa and 4 min, respectively, with a defatting ratio of 70.6%. This resulted in an insignificant irreversible deformation ratio (<1%) and an overall acceptability of 7.6 over 10.
authors.affiliation: Laboratoire d'Intensification des Procédés Agro-Industriels (LIPAI), Unité de Recherche: Technologie et Valorisation Agroalimentaire (TVA), Centre d'Analyses et de Recherche, Faculté des Sciences, Université Saint Joseph, Campus des Sciences et Technologies, Beirut, Lebanon. Electronic address: joelle.nader@net.usj.edu.lb.
authors.forename: Joelle
authors.initials: J
authors.lastname: Nader
authors.affiliation: Laboratoire d'Intensification des Procédés Agro-Industriels (LIPAI), Unité de Recherche: Technologie et Valorisation Agroalimentaire (TVA), Centre d'Analyses et de Recherche, Faculté des Sciences, Université Saint Joseph, Campus des Sciences et Technologies, Beirut, Lebanon.
authors.forename: Nada
authors.initials: N
authors.lastname: Fawaz
authors.affiliation: Laboratoire d'Intensification des Procédés Agro-Industriels (LIPAI), Unité de Recherche: Technologie et Valorisation Agroalimentaire (TVA), Centre d'Analyses et de Recherche, Faculté des Sciences, Université Saint Joseph, Campus des Sciences et Technologies, Beirut, Lebanon.
authors.forename: Charbel
authors.initials: C
authors.lastname: Afif
authors.affiliation: Laboratoire d'Intensification des Procédés Agro-Industriels (LIPAI), Unité de Recherche: Technologie et Valorisation Agroalimentaire (TVA), Centre d'Analyses et de Recherche, Faculté des Sciences, Université Saint Joseph, Campus des Sciences et Technologies, Beirut, Lebanon. Electronic address: nicolas.louka@fs.usj.edu.lb.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Louka
mesh_terms: D010367:Arachis / Q000737:chemistry*; D008055:Lipids / Q000032:analysis*; D011312:Pressure; D012677:Sensation
chemical_list: D008055:Lipids
keywords: Defatting; Oil yield; Peanuts; Pressing; Response Surface Methodology; Shape preservation