Influencia de la temperatura en la oxidación de biodiesel de soja

Autores/as

  • G. G. Pereira Fats and Oils Laboratory, Faculty of Food Engineering, University of Campinas
  • A. Morales Instituto de La Grasa (CSIC)
  • S. Marmesat Instituto de La Grasa (CSIC)
  • M. V. Ruiz-Méndez Instituto de La Grasa (CSIC)
  • D. Barrera-Arellano Fats and Oils Laboratory, Faculty of Food Engineering, University of Campinas
  • M. C. Dobarganes Instituto de La Grasa (CSIC)

DOI:

https://doi.org/10.3989/gya.0835142

Palabras clave:

Biodiesel de soja, Cinética de oxidación, Productos de oxidación, Temperatura, Tocoferoles

Resumen


El propósito de este trabajo es evaluar el efecto de la temperatura en el comportamiento oxidativo del biodiesel. Biodiesel derivado de aceite de soja fue oxidado a diferentes temperaturas (temperatura ambiente, 60 y 110 °C) y se evaluaron el contenido de compuestos primarios y secundarios de oxidación mediante el índice de peróxidos y de anisidina, respectivamente, a lo largo del periodo de inducción. Los resultados indicaron que el contenido de hidroperóxidos evolucionó siguiendo una cinética de orden cero a lo largo del periodo de inducción a todas las temperaturas y que su velocidad de formación cambió exponencialmente con la temperatura. También se dedujo que la temperatura influyó en la relación entre la formación de los productos de oxidación primarios y secundarios, disminuyendo a medida que aumentaba la temperatura. Además, fue posible predecir el comportamiento oxidativo del biodiesel de soja a temperatura ambiente ajustando a un modelo exponencial los valores de periodo de inducción obtenidos a diferentes temperaturas (70, 80, 90, 100 y 110 °C) mediante un equipo Rancimat.

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Publicado

2015-06-30

Cómo citar

1.
Pereira GG, Morales A, Marmesat S, Ruiz-Méndez MV, Barrera-Arellano D, Dobarganes MC. Influencia de la temperatura en la oxidación de biodiesel de soja. Grasas aceites [Internet]. 30 de junio de 2015 [citado 17 de mayo de 2024];66(2):e072. Disponible en: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1537

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Investigación

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