Development of a bioreactor based on lipase entrapped in a monolithic cryogel for esterification and interesterification reactions

• Autor(a) principal: Veríssimo, L. A. A.
• Data de Publicação: 2018
• Outros Autores: Mól, P. C. G., Soares, W. C. L., Minim, V. P. R., Hespanhol, M. C., Minim, L. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFLA
• Texto Completo: http://repositorio.ufla.br/jspui/handle/1/34504
• topic: Cryogel; Lipase; Entrapment; Butyl butyrate; Tripalmitin; Aprisionamento; Butirato de butilo; Tripalmitina

In this work, it was developed novel bioreactor consisting of Aspergillus niger lipase (ANL) entrapped in a polyacrylamide-based supermacroporous monolithic cryogel. Bioreactor performance in catalyzing the flavor ester butyl butyrate was optimized as a function of temperature (°C), substrate molar ratio (butyric acid: n-butanol) and added water (% (v/v)). The bioreactor was also applied to interesterification reactions. The maximum esterification yield (46%) for butyl butyrate synthesis was found at 40 °C, with a butyric acid:n-butanol molar ratio of 1:1.43 and added water of 65% (v/v). The bioreactor proved to be reusable with four consecutive reuses in the esterification reaction, with a residual esterification yield of 64.6% and volumetric activity of 31.6 mmol/mL·h. A high interesterification yield (17.35% in 24 h) was achieved when the substrate concentrations of tripalmitin and triolein were both 15 mmol/L, 35% added water (v/v) and temperature of 40 °C. These results showed that the bioreactor is a promising biocatalyst for biotechnological applications.