title: Effect of oil extraction assisted by ultrasound on the physicochemical properties and fatty acid profile of pumpkin seed oil (Cucurbita pepo).
abstract: The effects of amplitude and time of ultrasound-assisted extraction on the physicochemical properties and the fatty acid profile of pumpkin seed oil (Cucurbita pepo) were evaluated. Ultrasound time (5-30 min) and the response variables amplitude (25-100%), extraction yield, efficiency, oxidative stability in terms of the free fatty acids (FFA) of the plant design comprising two independent experiments variables, peroxide (PV), p-anisidine (AV), totox value (TV) and the fatty acid profile were evaluated. The results were analyzed by multiple linear regression. The time and amplitude showed significant differences (P<0.05) for all variables. The highest yield of extraction was achieved at 5 min and amplitude of 62.5% (62%). However, the optimal ultrasound-assisted extraction conditions were as follows: ultrasound time of 26.34 min and amplitude of 89.02%. All extracts showed low FFA (2.75-4.93% oleic acid), PV (1.67-4.68 meq/kg), AV (1.94-3.69) and TV (6.25-12.55) values. The main fatty acids in all the extracts were oleic and linoleic acid. Therefore, ultrasound-assisted oil extraction had increased performance and reduced extraction time without affecting the oil quality.
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: Betsabé
authors.initials: B
authors.lastname: Hernández-Santos
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: Jesús
authors.initials: J
authors.lastname: Rodríguez-Miranda
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: Erasmo
authors.initials: E
authors.lastname: Herman-Lara
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: Juan G
authors.initials: JG
authors.lastname: Torruco-Uco
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: Roselis
authors.initials: R
authors.lastname: Carmona-García
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico.
authors.forename: José M
authors.initials: JM
authors.lastname: Juárez-Barrientos
authors.affiliation: UNIDA-Instituto Tecnológico de Veracruz, Miguel Ángel de Quevedo s/n, Col. Formando Hogar, 91860 Veracruz, Veracruz, Mexico.
authors.forename: Rubí
authors.initials: R
authors.lastname: Chávez-Zamudio
authors.affiliation: Coordinación de Posgrado e Investigación, Instituto Tecnológico de Tuxtepec, Calz. Dr. Víctor Bravo Ahuja s/n, Col. 5 de Mayo, Tuxtepec, Oax., Mexico. Electronic address: organica_tux@yahoo.com.mx.
authors.forename: Cecilia E
authors.initials: CE
authors.lastname: Martínez-Sánchez
mesh_terms: D028464:Cucurbita / Q000196:embryology*; D010084:Oxidation-Reduction; D010938:Plant Oils / Q000302:isolation & purification*; D014465:Ultrasonics
chemical_list: D010938:Plant Oils
keywords: Cucurbita pepo; Pumpkin seed; Ultrasound; Yield