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Transesterification of castor oil catalyzed by a fermented solid produced by Burkholderia contaminans using a bioreactor coupled with ultrasound irradiation.
Moreira, Michelle Aparecida Coelho; Alnoch, Robson Carlos; Luz Junior, Luiz Fernando de Lima; Baron, Alessandra Machado; Mitchell, David Alexander; Krieger, Nadia.
Afiliación
  • Moreira MAC; Postgraduate Program in Sciences - Biochemistry, Federal University of Paraná, Polytechnic Center, Curitiba, Paraná, Brazil.
  • Alnoch RC; Postgraduate Program in Sciences - Biochemistry, Federal University of Paraná, Polytechnic Center, Curitiba, Paraná, Brazil.
  • Luz Junior LFL; Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
  • Baron AM; Department of Chemical Engineering, Federal University of Paraná, Polytechnic Center, Curitiba, Paraná, Brazil.
  • Mitchell DA; Coordination of the Degree in Chemistry, Federal Technological University of Parana - Campus Apucarana, Apucarana, Paraná, Brazil.
  • Krieger N; Postgraduate Program in Sciences - Biochemistry, Federal University of Paraná, Polytechnic Center, Curitiba, Paraná, Brazil.
Biotechnol Appl Biochem ; 70(2): 919-929, 2023 Apr.
Article en En | MEDLINE | ID: mdl-36239385
In this work, ultrasound was used to assist the ethanolysis of castor oil in a solvent-free system, catalyzed by a dry fermented solid containing the lipase from Burkholderia contaminans (BCFS). Reactions were done at 45°C. The maximum conversion in Erlenmeyer flasks was 71% in 96 h, using a loading of 9% (mass of BCFS in relation to the mass of triacylglycerols in the castor oil) and a molar ratio of ethanol:oil of 6:1, with addition of ethanol in 12 steps. In a packed-bed reactor containing 12 g of BCFS, the conversions were 78% in 48 h, and 83% in 72 h with an ethanol to oil molar ratio of 3:1 and treatment with an ultrasound probe, with maximum power of 500 W, frequency of 20 kHz, and 75% of the maximum power. These results are promising given that, with an ultrasound assisted bioreactor, a higher conversion in a shorter time was achieved, with a lower ethanol to oil molar ratio than was the case in the Erlenmeyer flasks without ultrasound.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aceite de Ricino / Etanol Idioma: En Revista: Biotechnol Appl Biochem Asunto de la revista: BIOQUIMICA / BIOTECNOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aceite de Ricino / Etanol Idioma: En Revista: Biotechnol Appl Biochem Asunto de la revista: BIOQUIMICA / BIOTECNOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos