Concentration of Natural Vitamin E Using a Continuous Countercurrent Supercritical CO₂ Extraction‐Distillation Dual Column

Abstract

A continuous countercurrent supercritical CO 2 extraction-distillation dual-column process was developed to extract and concentrate natural vitamin E (VE) from soybean oil deodorizer distillate (SODD). The experimental results demonstrated that process parameters such as extraction pressure, temperature, and solvent-to-feed ratio significantly impacted on the extraction efficiency of natural VE. A new five-parameter mass transfer model for the continuous countercurrent supercritical CO 2 extraction-distillation dual-column process was presented based on the Penetration and Double-Film theories. The calculated values of the mathematical model agreed well with the experimental data, with absolute average relative deviation values of less than 25 %.

Análise Do Potencial De Conservação De Energia Elétrica Na Santa Casa De Arealva: Sistemas De Iluminação E Ar Condicionado

“…Os processos usados industrialmente para a extração e purificação dos componentes dos DDs, bem como aqueles mais estudados visando sua otimização, envolvem diversas das etapas dentre as citadas a seguir: metanólise, etanólise ou glicerólise, destilação molecular, extração for fluido em estado supercrítico, extração e, coluna de recheio, cristalização e filtração sob vácuo (SHI et al, 2011;VAZQUEZ et al, 2007;ITO et al, 2005;YAN et al, 2012;FREGOLENTE et al, 2010).…”

Potential Source and Extraction of Vitamin E From Palm-Based Oils: A Review

“…A rapid extraction can be achieved by SFE and the vitamin E recovery was obtained up to 80% 29,32 . Some modification to increase the vitamin E recovery has been studied, such as the continuous stage of SFE 31,39 , dual column processing 33 and also the usage of co-solvent 30 which also can reduce the extraction time. Although SFE has been successful to obtain the high efficiency, clean environmentally process and solvent-freeresidue in the products 34,38 , it needs a high investment cost in the equipment of SFE 21 .…”

“…Therefore, this can enhance the concentration of Vitamin E. Several researchers have studied the modified esterification as the pretreatment for the vitamin E separation. Combination of esterification with supercritical fluid extraction (SC-CO2) will improve the solubility of fatty acids and enhance the vitamin E obtained [32][33][34]36 . Shi et al 33 has reported that vitamin E contains in esterification of soybean oil deodorizer increased from 5wt-% in SODD to 20wt-% in their ester forms.…”

“…Combination of esterification with supercritical fluid extraction (SC-CO2) will improve the solubility of fatty acids and enhance the vitamin E obtained [32][33][34]36 . Shi et al 33 has reported that vitamin E contains in esterification of soybean oil deodorizer increased from 5wt-% in SODD to 20wt-% in their ester forms. Although this method can improve recovery of vitamin E, the irreversible reaction in chemical modification could change the properties of the oil component and also up to the extent that can make it nonedible 36,49 .…”

Extraction of Tocopherol from Soybean Oil Deodorizer Distillate by Deep Eutectic Solvents

“…Therefore, the deodorizer distillate is the main raw material for the production of natural tocopherols, sterols and so on. Tocopherol contains four isomers, named α, β, γ, and δ-tocopherol, and a mixture of α, γ, and δ-tocopherol is widely found in vegetable oils 2 . As an active substance with strong antioxidant and physiological function, tocopherols have attracted much more attention in many fields, such as food, pharmacy and cosmetics 3 6 .…”