RT info:eu-repo/semantics/article
T1 Kinetic study and kinetic parameters of lipase‐catalyzed glycerolysis of sardine oil in a homogeneous medium
A1 García Solaesa, Ángela
A1 Sanz Díez, Mª Teresa
A1 Beltrán Calvo, Sagrario
A1 Melgosa Gómez, Rodrigo
K1 Lipase
K1 Glycerolysis
K1 Tert-butanol
K1 Mass transfer
K1 Kinetic model
K1 Chemical engineering
K1 Ingeniería química
AB The production of polyunsaturated fatty acids (PUFAs) concentrates by enzymatic catalysis hasgained interest due to their stereospecificity and the milder conditions employed compared to theuse of inorganic catalysts. The enzymatic glycerolysis of sardine oil by Lipozyme 435 to get PUFAconcentrates in the forms of di‐ and monoacylglycerols (DAGs, MAGs) in an optimized amount oftert‐butanol as the organic solvent was studied. First, mass transfer limitation of the reaction systemwas analyzed. The effects of different operating variables such as lipase loading, temperatureand feed composition were investigated. A semi‐empirical kinetic model based on the reversibleelementary reactions of glycerolysis and hydrolysis of the glycerides was employed to correlate theexperimental kinetic data. A molar ratio glycerol:oil of 3:1 was the optimum, which produced morethan 84 wt% of MAG at 323 K. A comparison with other glycerolysis systems was performed usingMAG yield, reaction rate and significance of kinetic parameters.
PB Elsevier
SN 0253-9837
YR 2016
FD 2016-04
LK http://hdl.handle.net/10259/4322
UL http://hdl.handle.net/10259/4322
LA eng
NO Spanish Government through MINECO(CTQ2012‐39131‐C02‐01)
DS Repositorio Institucional de la Universidad de Burgos
RD 24-dic-2024