Ethyl esters production catalyzed by immobilized lipases is influenced byn-hexaneandter-amyl alcohol as organic solvents

Autor(es)

Borges, Janaina Pires ; Quilles Junior, Jose Carlos ; Moreno-Perez, Sonia ; Fernandez-Lorente, Gloria ; Boscolo, Mauricio ; Gomes, Eleni ; da Silva, Roberto ; Bocchini, Daniela Alonso ; Guisan, Jose Manuel

• Tipo de documento: Artigo Científico
• Fonte: Bioprocess and Biosystems Engineering; v. 43, n. 11, p. 9-pg., 2020-06-27.

Resumo

Lipase stability in organic solvent is crucial for its application in many biotechnological processes as biocatalyst. One way to improve lipase's activity and stability in unusual reaction medium is its immobilization on inert supports. Here, lipases from different sources and immobilized through weak chemical interactions on hydrophobic and ionic supports had their transesterification ability dramatically dependent on the support and also on the solvent that had been used. The ethanolysis of sardine oil was carried out at the presence of cyclohexane and tert-amyl alcohol, in which Duolite A568-Thermomyces lanuginosalipase derivative achieved 49% of ethyl esters production after 24 h in cyclohexane. The selectivity of immobilized lipases was also studied and, after 3 h of synthesis, the reaction with Duolite A568-Thermomyces lanuginosaderivative in cyclohexane produced 24% ethyl ester of eicosapentaenoic acid and 1.2% ethyl ester of docosahexaenoic acid, displaying a selectivity index of 20 times the ethyl ester of eicosapentaenoic acid. Different derivatives ofCandida antarcticalipases fraction B (CALB) and phospholipaseLecitase (R) Ultra (Lecitase) were also investigated. Along these lines, a combination between these factors may be applied to improve the activity and selectivity of immobilized lipases, decreasing the total cost of the process. (AU)

• Processo FAPESP: 13/00530-0 - Imobilização e estabilização de lipases de Candida antarctida: fração b e sua aplicação em biocatálise
• Beneficiário: José Carlos Quilles Junior
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 12/09054-3 - Imobilização de lipases em derivados de agarose e quitosana e sua aplicação em biocatálise
• Beneficiário: José Carlos Quilles Junior
• Modalidade de apoio: Bolsas no Brasil - Mestrado