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Journal of the American Oil Chemists' Society

, Volume 93, Issue 9, pp 1201–1210 | Cite as

Omega-3 Polyunsaturated Fatty Acids Concentration Using Synthesized Poly-Vinylidene Fluoride (PVDF) Asymmetric Membranes

  • Samaneh Ghasemian
  • Mohammad Ali SahariEmail author
  • Mohsen Barzegar
  • Hassan Ahmadi Gavlighi
Original Paper

Abstract

In this study, the performance of synthesized poly-vinylidene fluoride (PVDF) membranes to concentrate ω3-polyunsaturated fatty acids from lantern fish oil was evaluated. The PVDF membranes were prepared via the phase inversion method. The effect of coagulation bath temperatures (CBT: 0, 25 and 50 °C) on the morphology of the membranes and the ω3-PUFA concentration process was examined and discussed. Scanning electron microscopy images showed that an increasing coagulation bath temperature (CBT) leads to a more porous structure in the membranes as well as a larger pore diameter. ω3-PUFA concentration was evaluated at different pressures and temperatures, ranging from 3 to 5 bar and 20 to 40 °C, respectively. The PVDF membrane prepared at a CBT of 0 °C (M1) resulted in the best ω3-PUFA concentration (40.4 %) at a pressure and temperature of 5 bar and 30 °C, respectively. Conversely, the PVDF membrane formed at CBT of 50 °C (M3) showed the highest oil flux. In addition, fouling analysis indicates that complete pore blocking was the predominant mechanism for the M1 membrane and intermediate pore blocking for the M2 and M3 membranes.

Keywords

ω3-PUFA concentration PVDF membrane Coagulation bath temperature Pressure Temperature Fouling 

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Copyright information

© AOCS 2016

Authors and Affiliations

  • Samaneh Ghasemian
    • 1
  • Mohammad Ali Sahari
    • 1
    Email author
  • Mohsen Barzegar
    • 1
  • Hassan Ahmadi Gavlighi
    • 1
  1. 1.Faculty of Agriculture, Department of Food Science and TechnologyTarbiat Modares UniversityTehranIran

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