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Optimization of molecular distillation to concentrate ethyl esters of eicosapentaenoic (20:5 ω-3) and docosahexaenoic acids (22:6 ω-3) using simplified phenomenological modeling

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  • معلومة اضافية
    • بيانات النشر:
      John Wiley & Sons Ltd
    • Collection:
      CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
    • نبذة مختصرة :
      Squid oil contains high concentration of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The purpose of this work was to optimize the process of separation by molecular distillation of ω-3 fatty acid ethyl esters obtained from squid oil. The separation process was conducted in two stages in a laboratory-scale molecular distiller. A mathematical model based on the mass transfer phenomena was developed. The Nelder-Mead numerical method was used to optimize the model. RESULTS: The ω-3 content in the output material of the stage II increased with the temperature of stage I (T 1). The amount of distillated material in stage I increased and the distillated material in the stage II decreased with the increment of T 1. That implied a decreasing of the ω-3 recovery in the distillated material in the stage II. In addition, the ω-3 recovery increased with the temperature of stage II (T 2), but the temperatures should be less than 140 °C to avoid chemical changes. The optimization results showed an optimal process at T 1 = 120.5 °C and T 2 = 140 °C. CONCLUSION: The theoretical model and the optimization give decision criteria about the operative conditions for reaching the highest yield during molecular distillation of ω-3 fatty acid ethyl esters. © 2011 Society of Chemical Industry. ; Fil: Rossi, Pablo Cesar. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina ; Fil: Pramparo, Maria del Carmen. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; Argentina ; Fil: Gaich, María C. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; Argentina ; Fil: Grosso, Nelson. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. ...
    • File Description:
      application/pdf
    • ISSN:
      0022-5142
      1097-0010
    • Relation:
      http://hdl.handle.net/11336/150442; Rossi, Pablo Cesar; Pramparo, Maria del Carmen; Gaich, María C.; Grosso, Nelson; Nepote, Valeria; Optimization of molecular distillation to concentrate ethyl esters of eicosapentaenoic (20:5 ω-3) and docosahexaenoic acids (22:6 ω-3) using simplified phenomenological modeling; John Wiley & Sons Ltd; Journal of the Science of Food and Agriculture; 91; 8; 6-2011; 1452-1458; CONICET Digital; CONICET
    • الدخول الالكتروني :
      http://hdl.handle.net/11336/150442
    • Rights:
      info:eu-repo/semantics/openAccess ; https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
    • الرقم المعرف:
      edsbas.481F0F11