RT info:eu-repo/semantics/conferenceObject
T1 Comparison of glycerolysis of sardine oil by Lipozyme 435 in solvent free and SC-CO2 media
A1 García Solaesa, Ángela
A1 Melgosa Gómez, Rodrigo
A1 Sanz Díez, Mª Teresa
A1 Beltrán Calvo, Sagrario
A1 Illera Gigante, Alba Ester
K1 Ingeniería química
K1 Chemical engineering
AB The efficiency of lipase catalyzed glycerolysis of sardine oil in solvent free and supercriticalcarbon dioxide media has been investigated. The immiscibility between substrates, glyceroland oil, is an important drawback to reach good high conversions of triglycerides (TAG) intomonoglycerides (MAG) and diglycerides (DAG) in short reaction times. To improve masstransfer rates, emulsification of both reactants as reverse micelles (glycerol-in-oil) has beencarried out. Enzyme-catalyzed reaction is an attractive alternative since the reaction can becarried out under mild conditions avoiding the oxidation of omega-3 fatty acids. In this work,a commercial immobilized lipase (Lipozyme 435) was employed as biocatalyst. The effects ofSC-CO2 density on reaction rates and oxidation stability has been compared with thoseobtained in solvent free system at atmospheric pressure. The effect of temperature andpressure on reaction yield, oxidation state of reaction products and enzyme stability wasstudied. Good stability of Lipozyme 435 has been observed in both systems proving nothermal deactivation at temperatures higher than its optimum.
YR 2017
FD 2017
LK http://hdl.handle.net/10259/4583
UL http://hdl.handle.net/10259/4583
LA eng
NO Ponencia presentada en: 16th European Meeting on Supercritical Fluids, 25 a 28 de abril de 2017, Lisboa
NO MINECO (CTQ2012‐39131‐C02‐01 andCTQ2015-64396-R) for financial support. Ángela García Solaesa acknowledges University ofBurgos for a pre‐doctoral fellowship. Rodrigo Melgosa acknowledges MINECO for a predoctoralgrant (reference BES‐2013‐063937).
DS Repositorio Institucional de la Universidad de Burgos
RD 28-abr-2024