Concentrationof Omega-3 Polyunsaturated FattyAcids from Oil of Schizochytrium limacinumby MolecularDistillation: Optimization of Technological Conditions.

Production of omega-3polyunsaturated fatty acids concentratesfrom oil of Schizochytrium limacinumwas optimizedto obtain the highest omega-3 polyunsaturated fatty acid (ω-3PUFA)enrichment ratio. In this process, the content of docosapentenoicacid (DPA), the content of docosahexenoic acid (DHA) in the finalproduct, the percentage recovery of the heavy phase, and the ω-3PUFAenrichment ratio were optimized. Single-factor experiments were carriedout to study the effects of evaporator temperature, feeding rate,feeding temperature, and roller speed. A central composite designwas used to optimize technological conditions. Under optimum conditions,the highest ω-3PUFA enrichment ratio (92.98%) was obtained atan evaporator temperature of 110.4 °C, a feeding rate of 78.7mL/h, a roller speed of 350 rpm, a feeding temperature of 80 °C,and an operating pressure 10 Pa. [ABSTRACT FROM AUTHOR]