Effects of some reaction parameters on the production of ethyl esters using a combi-lipase of TLL and CALB in Lewatit VP OC 1600
Published 2021-01-01
Keywords
- Biocatalysts,
- Combi-lipases,
- Palm Oil,
- Docking,
- Ethyl Esters
- Enzymes ...More
How to Cite
Copyright (c) 2021 Esteban Camilo Toro Alzate, César A. Godoy
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
The optimization of mixtures of immobilized lipases (combi-lipases) has been applied as a strategy to increase the rate and yield in the production of alkyl esters of fatty acids or in hydrolyzed vegetable oils with respect to the catalysis of individual lipases; according to previous studies, the Combi-lipase (CL) of TLL (75%) and CALB (25%) in LW was identified as the most active according to the amount of immobilized protein and its efficiency in the production of ethyl esters (EE) under mild reaction conditions, however, its stability under different conditions has not been studied. It was determined that this CL produces EE stably at different temperatures and in the presence of water and free fatty acids, however, the addition of glycerol generated decreases of up to 70% in the synthesis of ethyl esters. Applying the Arrhenius model, it was determined to have an Ea of 21.4 kJ / mol, meaning a 5% decrease compared to its main component (TLL-LW), obtaining better yields in shorter times; additionally, the use of oils of a different nature such as soybeans generated a 20% increase in EE production. Finally, a study of docking and the kinetic simulation of the system was carried out using a previously developed model, but a clear correlation with the experimental results was not achieved. Apart from this, due to its robustness, the CL studied has a high potential for application in biodiesel synthesis.
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References
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