Evaluation of Tocopherol Recovery Through Simulation of Molecular Distillation Process

Abstract

DISMOL simulator was used to determine the best possible operating conditions to guide, in future studies, experimental works. This simulator needs several physical-chemical properties and often it is very difficult to determine them because of the complexity of the involved components. Their determinations must be made through correlations and/or predictions, in order to characterize the system and calculate it. The first try is to have simulation results of a system that later can be validated with experimental data. To implement, in the simulator, the necessary parameters of complex systems is a difficult task. In this work, we aimed to determe these properties in order to evaluate the tocopherol (vitamin E) recovery using a DISMOL simulator. The raw material used was the crude deodorizer distillate of soya oil. With this procedure, it is possible to determine the best operating conditions for experimental works and to evaluate the process in the separation of new systems, analyzing the profiles obtained from these simulations for the falling film molecular distillator.

Molecular Distillation-Induced Deacidification of Soybean Oil Isolated by Enzyme-Assisted Aqueous Extraction: Effect of Distillation Parameters

“…This behavior was ascribed to the concomitant decrease of oil residence time, which, in turn, decreased the tocopherol distillation rate and increased the tocopherol content of distillation residues. Figure 3A shows that tocopherol content significantly decreased with increasing temperature, in agreement with the results of previous studies [23,30]. Specifically, the total tocopherol content declined from 1063.2 to 322.3 mg/kg as the temperature increased from 120 to 200 • C. The above behavior was mainly ascribed to the increased evaporation of heavy components at high temperatures.…”

“…On the contrary, high feed flow rates decreased heat transfer efficiency and hence, increased PV and p-anisidine value. Figure 3A shows that tocopherol content significantly decreased with increasing temperature, in agreement with the results of previous studies [23,30]. Specifically, the total tocopherol content declined from 1063.2 to 322.3 mg/kg as the temperature increased from 120 to 200 °C.…”

Optimization of tocopherol concentration process from soybean oil deodorized distillate using response surface methodology

“…Molecular distillation or short path distillation is a separation process characterized by short exposure of the feed inside the equipment, and so to the operating temperature, by high vacuum and by a small distance between evaporator and condenser (in the order of mean free path of the molecular involved) (13). In this study, the centrifugal molecular distillator from Myers Vacuum Inc. (Kittaning, PA), with an evaporator area of 0.0046 m 2 was used.…”

“…This process has been applied to lipid-containing products, including monoglycerides production (12), recovery of carotenoids from palm oil (13), and purification of structured lipids (14). Also, it can be applied to fuel product, like production of biodiesel from castor oil (15) and heavy petroleum characterization (16).…”

Produção de monoacilgliceróis e diacilgliceróis via glicerólise enzimática e destilação molecular

“…A DM tem sido aplicada com sucesso na área de lipídeos; além da concentração de MAG, um vasto número de trabalhos tem sido publicado na área, como recuperação de carotenóides a partir do óleo de palma, 15 recuperação de tocoferol a partir do destilado da desodorização do óleo de soja, 16 purificação e desodorização de lipídeos estruturados, 17 preparação de concentrados de ácidos graxos poliinsaturados, 18 além de outros. Este trabalho teve como objetivo separar os produtos obtidos na glicerólise enzimática do óleo de soja utilizando a técnica de destilação molecular visando obter dois tipos de materiais igualmente importantes: MAG destilados com propriedades emulsificantes e óleo enriquecido de DAG.…”