2026-04-28T19:31:28Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/43222022-04-29T12:02:46Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245
García Solaesa, Ángela
219
500
Sanz Díez, Mª Teresa
530
500
Beltrán Calvo, Sagrario
57
500
Melgosa Gómez, Rodrigo
357
500
2017-02-02T11:31:31Z
2018-04-01T02:45:06Z
2016-04
0253-9837
http://hdl.handle.net/10259/4322
The production of polyunsaturated fatty acids (PUFAs) concentrates by enzymatic catalysis has
gained interest due to their stereospecificity and the milder conditions employed compared to the
use of inorganic catalysts. The enzymatic glycerolysis of sardine oil by Lipozyme 435 to get PUFA
concentrates in the forms of di‐ and monoacylglycerols (DAGs, MAGs) in an optimized amount of
tert‐butanol as the organic solvent was studied. First, mass transfer limitation of the reaction system
was analyzed. The effects of different operating variables such as lipase loading, temperature
and feed composition were investigated. A semi‐empirical kinetic model based on the reversible
elementary reactions of glycerolysis and hydrolysis of the glycerides was employed to correlate the
experimental kinetic data. A molar ratio glycerol:oil of 3:1 was the optimum, which produced more
than 84 wt% of MAG at 323 K. A comparison with other glycerolysis systems was performed using
MAG yield, reaction rate and significance of kinetic parameters.
Spanish Government through MINECO
(CTQ2012‐39131‐C02‐01)
application/pdf
eng
Elsevier
Chinese Journal of Catalysis. 2016, V. 37, n. 4, p. 596–606
http://dx.doi.org/10.1016/S1872-2067(15)61040-3
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Lipase
Glycerolysis
Tert-butanol
Mass transfer
Kinetic model
Chemical engineering
Ingeniería química
Kinetic study and kinetic parameters of lipase‐catalyzed glycerolysis of sardine oil in a homogeneous medium
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
CC-LICENSE
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oai:riubu.ubu.es:10259/4322
2022-04-29 14:02:46.779
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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