v. 33 n. 2 (2020): Revista ION
Artigos

Efeitos de alguns parâmetros de reação na produção de ésteres etílicos usando uma lipase combinada de TLL e CALB no Lewatit VP OC 1600

Esteban Camilo Toro Alzate
Estudiante de Maestría
César A. Godoy
Universidad del Valle

Publicado 2021-01-01

Palavras-chave

  • Biocatalisadores,
  • Combilipases,
  • Óleo de Palma,
  • Docking,
  • Ésteres Etílicos,
  • Enzimas
  • ...Mais
    Menos

Como Citar

Toro Alzate, E. C., & Godoy, C. A. (2021). Efeitos de alguns parâmetros de reação na produção de ésteres etílicos usando uma lipase combinada de TLL e CALB no Lewatit VP OC 1600. REVISTA ION, 33(2), 83–97. https://doi.org/10.18273/revion.v33n2-2020007

Resumo

A otimização de misturas de lipases imobilizadas (combi-lipases) tem sido aplicada como estratégia para aumentar a velocidade e o rendimento na produção de ésteres alquílicos de ácidos graxos ou em óleos vegetais hidrolisados ​​no que diz respeito à catálise de lipases individuais; de acordo com estudos anteriores, a Combi-lipase (CL) da TLL (75%) e CALB (25%) na LW foi identificada como a mais ativa de acordo com a quantidade de proteína imobilizada e sua eficiência na produção de ésteres etílicos (EE) em condições de reação moderadas, no entanto, sua estabilidade em diferentes condições não foi estudada. Foi determinado que este CL produz EE de forma estável a diferentes temperaturas e na presença de água e ácidos graxos livres, no entanto, a adição de glicerol gera reduções de até 70% na síntese de ésteres etílicos. Aplicando o modelo Arrhenius, determinou-se um Ea de 21,4 kJ / mol, significando uma redução de 5% em relação ao seu componente principal (TLL-LW), obtendo melhores rendimentos em tempos mais curtos; Além disso, o uso de óleos de natureza diferente, como a soja, gerou um aumento de 20% na produção dos EE. Finalmente, um estudo de acoplagem e simulação cinética do sistema foi realizado usando um modelo desenvolvido anteriormente, mas uma correlação clara com os resultados experimentais não foi alcançada. Além disso, devido à sua robustez, o CL estudado tem um alto potencial de aplicação na síntese de biodiesel.

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