Optimization of olive oil hydrolysis process using immobilized Lipase from Burkholderia cepacia sp. in Polyurethane

Nádia Ligianara Dewes Nyari, Alessandro Rogério Paulazzi, Clarice Steffens, Marcelo Mignoni, Jamile Zeni, Rogério Marcos Dallago

Resumo


 

The aim of this study was to achieve the best conditions for the  olive oil hydrolysis process at optimal pH and temperature using Burkholderia cepacia lipase immobilized in situ in rigid polyurethane support. The influences of the temperature (13.85 to 56.5ºC) and pH (4.18 to 9.82) were evaluated by a central composite rotational experimental design 22. The operational stability and storage conditions were also studied. The olive oil hydrolysis process was optimized in pH 7.0, at 40°C and 15 min of reaction, with 66 and 93 U g-1 of hydrolysis activity in free and immobilized lipase, respectively, with > 700% yield. The immobilized remained stable for up to 40 days of storage at temperatures of 60oC, and for 100 days from 4 to 25°C. The operational stability of the immobilized was 6 continuous cycles. In this way, immobilization showed to be a promising alternative for its application in olive oil hydrolysis, having storage stability and reuse capability.

 


Palavras-chave


biocatalysis; lipase; in situ immobilization; polyurethane; hydrolysis.

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DOI: http://dx.doi.org/10.4025/actascitechnol.v39i4.30770





ISSN 1806-2563 (impresso) e ISSN 1807-8664 (on-line) e-mail: actatech@uem.br

  

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