Mathematical modeling of supercritical fluid extraction of flax seed oil in a pilot plant system: tocopherol content

Recent research has focused on the application of supercritical fluid extraction (SFE) at pilot scale. This study specifically addresses the SFE of flaxseed oil and its mathematical modeling in a pilot plant system, utilizing the BIC (Broken and Intact model) model. Particle size was found to have an effect on the mass transfer coefficient of the solid phase (ksa,​ s⁻¹). However, solubility values fluctuated (ranging from 0.169 to 0.06 g/g CO₂) as the pressure increased from 35 MPa to 45 MPa. The study also examined the influence of enzymatic action and t 0 ​ (the extraction time before the process variables were fixed) on solubility. Besides, above-mentioned circumstances the results of the laboratory and pilot scale studies were close each other. Tocopherol content analysis revealed that optimal extraction conditions for bioactive compound preservation (35 MPa, 55°C: 0.125 µg/mg γ-tocopherol) differed from conditions maximizing extraction rate, demonstrating the importance of integrating quality parameters with mathematical modeling for pilot-scale process design. This provides new optimization criteria beyond conventional yield-based approaches.

Hali tarjima qilinmagan