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

• Published in: Journal of the American Oil Chemists' Society Vol. 93; no. 9; pp. 1201 - 1210
• Main Authors: Ghasemian, Samaneh, Sahari, Mohammad Ali, Barzegar, Mohsen, Ahmadi Gavlighi, Hassan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-09-2016; Springer Nature B.V
• Subjects: Agriculture; Biomaterials; Biotechnology; Chemistry; Chemistry and Materials Science; Coagulation; Coagulation bath temperature; Fatty acids; Fish oils; Fluorides; Food Science; Fouling; Industrial Chemistry/Chemical Engineering; Membranes; Original Paper; Polyunsaturated fatty acids; Polyvinylidene fluorides; Pressure; PVDF membrane; Studies; Synthesis; Temperature; Vinylidene fluoride; ω3‐PUFA concentration; ω3-PUFA concentration; Coagulation bath temperature; Temperature; PVDF membrane; Fouling; Pressure
• ISSN: 0003-021X; 1558-9331
• DOI: 10.1007/s11746-016-2876-8

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.