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Antonio J A Meirelles - One of the best experts on this subject based on the ideXlab platform.
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Deacidification of palm Oil by solvent extraction
Separation and Purification Technology, 2016Co-Authors: Cintia B. Gonçalves, Elaine C. Marcon, Christianne E. C. Rodrigues, Antonio J A MeirellesAbstract:Abstract The present work reports the influence of some process variables on the losses/transfer of fatty compounds during the deacidification of palm Oil by liquid–liquid extraction. The response surface methodology (RSM) was used to analyze the effect of the mass ratio of Oil to solvent and the water content in the solvent, aiming to minimize the losses of Neutral Oil and maximize the transfer of free fatty acids plus carotenoids preservation. By using appropriate conditions observed in RSM analysis (mass ratio of Oil to solvent equal to 0.74 and water content around 6 mass%), the deacidification of palm Oil by continuous liquid–liquid extraction was performed in a perforated rotating disc contactor (PRDC). The experimental results indicate that it is possible to obtain refined palm Oil with a free acidity lower than 0.1 mass% by continuous liquid–liquid extraction.
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deacidification of rice bran Oil by liquid liquid extraction using a renewable solvent
Separation and Purification Technology, 2014Co-Authors: Christianne Elisabete Da Costa Rodrigues, Elaine C. Marcon, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:Abstract The deacidification of rice bran Oil by continuous liquid–liquid extraction using aqueous ethanol as the solvent was investigated in a perforated rotating disc column (PRDC). The influence of partial acylglycerols and minor compounds, such as phosphorus and nutraceutical compounds, on the free fatty acid mass transfer was observed. The experimental results show that total deacidification by solvent extraction is feasible. The losses in Neutral Oil, tocols and γ-oryzanol were significantly lower than those reported in the literature for alkali or physical refining of rice bran Oil. A simulation of the extraction process was also performed, and the simulated results were in good agreement with the experimental data.
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steam deacidification of palm Oil
Food and Bioproducts Processing, 2011Co-Authors: Klicia Araujo Sampaio, Roberta Ceriani, Simone Monteiro E Silva, Thiago Taham, Antonio J A MeirellesAbstract:Abstract This work presents the application of response surface methodology (RSM) to the study of the effects of three factors (temperature, percent stripping steam and the stearin/olein ratio) on the losses/transfer of fatty compounds during the steam deacidification of blends of palm Oil fractions (stearin and olein) as model systems. The responses of interest were the final Oil acidity and the loss of Neutral Oil (NOL). These experiments were unprecedented in terms of the monitoring and controlling of the process variables during the heating and stripping periods in a laboratory scale batch deodorizer. The results revealed that the Oil composition was an important and statistically significant factor in the selection of more suitable processing variables, besides temperature and steam.
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extraction of free fatty acids from peanut Oil and avocado seed Oil liquid liquid equilibrium data at 298 2 k
Journal of Chemical & Engineering Data, 2008Co-Authors: Christianne Elisabete Da Costa Rodrigues, Antonio J A MeirellesAbstract:The present paper reports phase equilibrium experimental data for two systems composed by peanut Oil or avocado seed Oil + commercial oleic acid + ethanol + water at 298.2 K and different water contents in the solvent. The addition of water to the solvent reduces the loss of Neutral Oil in the alcoholic phase and improves the solvent selectivity. The experimental data were correlated by the NRTL and UNIQUAC models. The global deviations between calculated and experimental values were 0.63 % and 1.08 %, respectively, for the systems containing avocado seed Oil. In the case of systems containing peanut Oil those deviations were 0.65 % and 0.98 %, respectively. Such results indicate that both models were able to reproduce correctly the experimental data, although the NRTL model presented a better performance.
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deacidification of vegetable Oils by solvent extraction
Recent Patents on Engineering, 2007Co-Authors: Christianne Elisabete Da Costa Rodrigues, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:The refining of edible Oils requires a series of purification steps, with the most important being the decrease of the free fatty acid level of the crude Oil. This step is very important for the quality of the final product and has a major impact on the economic feasibility of the whole process. Several techniques, alternative to the conventional caustic or steam distillation methods, are suggested in the literature, such as supercritical extraction, membrane technology and solvent extraction. In the present paper we discuss the main aspects related to the solvent extraction technique, coupled or not with the conventional methods. The reviewed patents indicate various advantages of a purification process based on the selective extraction of free fatty acids using short chain alcohols. Its technical feasibility is due to the differences in solubility of free fatty acids and Neutral Oil in the proposed solvents. This alternative technique does not generate waste products and can preserve nutraceutical compounds in the refined Oil.
Christianne Elisabete Da Costa Rodrigues - One of the best experts on this subject based on the ideXlab platform.
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deacidification of rice bran Oil by liquid liquid extraction using a renewable solvent
Separation and Purification Technology, 2014Co-Authors: Christianne Elisabete Da Costa Rodrigues, Elaine C. Marcon, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:Abstract The deacidification of rice bran Oil by continuous liquid–liquid extraction using aqueous ethanol as the solvent was investigated in a perforated rotating disc column (PRDC). The influence of partial acylglycerols and minor compounds, such as phosphorus and nutraceutical compounds, on the free fatty acid mass transfer was observed. The experimental results show that total deacidification by solvent extraction is feasible. The losses in Neutral Oil, tocols and γ-oryzanol were significantly lower than those reported in the literature for alkali or physical refining of rice bran Oil. A simulation of the extraction process was also performed, and the simulated results were in good agreement with the experimental data.
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extraction of free fatty acids from peanut Oil and avocado seed Oil liquid liquid equilibrium data at 298 2 k
Journal of Chemical & Engineering Data, 2008Co-Authors: Christianne Elisabete Da Costa Rodrigues, Antonio J A MeirellesAbstract:The present paper reports phase equilibrium experimental data for two systems composed by peanut Oil or avocado seed Oil + commercial oleic acid + ethanol + water at 298.2 K and different water contents in the solvent. The addition of water to the solvent reduces the loss of Neutral Oil in the alcoholic phase and improves the solvent selectivity. The experimental data were correlated by the NRTL and UNIQUAC models. The global deviations between calculated and experimental values were 0.63 % and 1.08 %, respectively, for the systems containing avocado seed Oil. In the case of systems containing peanut Oil those deviations were 0.65 % and 0.98 %, respectively. Such results indicate that both models were able to reproduce correctly the experimental data, although the NRTL model presented a better performance.
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deacidification of vegetable Oils by solvent extraction
Recent Patents on Engineering, 2007Co-Authors: Christianne Elisabete Da Costa Rodrigues, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:The refining of edible Oils requires a series of purification steps, with the most important being the decrease of the free fatty acid level of the crude Oil. This step is very important for the quality of the final product and has a major impact on the economic feasibility of the whole process. Several techniques, alternative to the conventional caustic or steam distillation methods, are suggested in the literature, such as supercritical extraction, membrane technology and solvent extraction. In the present paper we discuss the main aspects related to the solvent extraction technique, coupled or not with the conventional methods. The reviewed patents indicate various advantages of a purification process based on the selective extraction of free fatty acids using short chain alcohols. Its technical feasibility is due to the differences in solubility of free fatty acids and Neutral Oil in the proposed solvents. This alternative technique does not generate waste products and can preserve nutraceutical compounds in the refined Oil.
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optimization of the rice bran Oil deacidification process by liquid liquid extraction
Journal of Food Engineering, 2006Co-Authors: Christianne Elisabete Da Costa Rodrigues, Marcia M Onoyama, Antonio J A MeirellesAbstract:Abstract The present paper reports the process variable influence on the losses/transfer of fatty compounds during the deacidification process of rice bran Oil by liquid–liquid extraction. The influence of process variables such as free fatty acid concentration in the Oil, water content in the ethanolic solvent and Oil:solvent mass ratio, were analyzed using the response surface methodology, having the aim to maximize the transfer of free fatty acids and minimize the losses of Neutral Oil plus minor compounds. In addition, the UNIQUAC equation was used to predict the transfer/losses of fatty and nutraceutical compounds to the alcohol phase. Both methodologies, the mathematical model from non-linear multiple regression and the UNIQUAC model, presented good agreement with the experimental data.
Cintia B. Gonçalves - One of the best experts on this subject based on the ideXlab platform.
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Deacidification of palm Oil by solvent extraction
Separation and Purification Technology, 2016Co-Authors: Cintia B. Gonçalves, Elaine C. Marcon, Christianne E. C. Rodrigues, Antonio J A MeirellesAbstract:Abstract The present work reports the influence of some process variables on the losses/transfer of fatty compounds during the deacidification of palm Oil by liquid–liquid extraction. The response surface methodology (RSM) was used to analyze the effect of the mass ratio of Oil to solvent and the water content in the solvent, aiming to minimize the losses of Neutral Oil and maximize the transfer of free fatty acids plus carotenoids preservation. By using appropriate conditions observed in RSM analysis (mass ratio of Oil to solvent equal to 0.74 and water content around 6 mass%), the deacidification of palm Oil by continuous liquid–liquid extraction was performed in a perforated rotating disc contactor (PRDC). The experimental results indicate that it is possible to obtain refined palm Oil with a free acidity lower than 0.1 mass% by continuous liquid–liquid extraction.
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deacidification of rice bran Oil by liquid liquid extraction using a renewable solvent
Separation and Purification Technology, 2014Co-Authors: Christianne Elisabete Da Costa Rodrigues, Elaine C. Marcon, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:Abstract The deacidification of rice bran Oil by continuous liquid–liquid extraction using aqueous ethanol as the solvent was investigated in a perforated rotating disc column (PRDC). The influence of partial acylglycerols and minor compounds, such as phosphorus and nutraceutical compounds, on the free fatty acid mass transfer was observed. The experimental results show that total deacidification by solvent extraction is feasible. The losses in Neutral Oil, tocols and γ-oryzanol were significantly lower than those reported in the literature for alkali or physical refining of rice bran Oil. A simulation of the extraction process was also performed, and the simulated results were in good agreement with the experimental data.
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deacidification of vegetable Oils by solvent extraction
Recent Patents on Engineering, 2007Co-Authors: Christianne Elisabete Da Costa Rodrigues, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:The refining of edible Oils requires a series of purification steps, with the most important being the decrease of the free fatty acid level of the crude Oil. This step is very important for the quality of the final product and has a major impact on the economic feasibility of the whole process. Several techniques, alternative to the conventional caustic or steam distillation methods, are suggested in the literature, such as supercritical extraction, membrane technology and solvent extraction. In the present paper we discuss the main aspects related to the solvent extraction technique, coupled or not with the conventional methods. The reviewed patents indicate various advantages of a purification process based on the selective extraction of free fatty acids using short chain alcohols. Its technical feasibility is due to the differences in solubility of free fatty acids and Neutral Oil in the proposed solvents. This alternative technique does not generate waste products and can preserve nutraceutical compounds in the refined Oil.
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liquid liquid equilibrium data for the system palm Oil fatty acids ethanol water at 318 2 k
Fluid Phase Equilibria, 2004Co-Authors: Cintia B. Gonçalves, Antonio J A MeirellesAbstract:Abstract Deacidification of vegetable Oils can be easily performed by liquid–liquid extraction using appropriate solvents like ethanol. This paper reports experimental data for systems containing palm Oil + palmitic/oleic acid + ethanol + water at 318.2 K and different water contents. The addition of water to the solvent reduces the loss of Neutral Oil in the alcoholic phase and improves the solvent selectivity. The experimental data were correlated by the NRTL and UNIQUAC models. For systems with palmitic acid, the global deviations between experimental and calculated concentrations were 0.75% for the NRTL model and 0.61% for the UNIQUAC equation. For systems with oleic acid, the corresponding values were 1.05% and 0.84%. The adjusted interaction parameters were used to predict the equilibrium of bleached palm Oil + aqueous ethanol at 318.2 K, with deviation between calculated and experimental mass percentages not higher than 1.60%.
Elaine C. Marcon - One of the best experts on this subject based on the ideXlab platform.
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Deacidification of palm Oil by solvent extraction
Separation and Purification Technology, 2016Co-Authors: Cintia B. Gonçalves, Elaine C. Marcon, Christianne E. C. Rodrigues, Antonio J A MeirellesAbstract:Abstract The present work reports the influence of some process variables on the losses/transfer of fatty compounds during the deacidification of palm Oil by liquid–liquid extraction. The response surface methodology (RSM) was used to analyze the effect of the mass ratio of Oil to solvent and the water content in the solvent, aiming to minimize the losses of Neutral Oil and maximize the transfer of free fatty acids plus carotenoids preservation. By using appropriate conditions observed in RSM analysis (mass ratio of Oil to solvent equal to 0.74 and water content around 6 mass%), the deacidification of palm Oil by continuous liquid–liquid extraction was performed in a perforated rotating disc contactor (PRDC). The experimental results indicate that it is possible to obtain refined palm Oil with a free acidity lower than 0.1 mass% by continuous liquid–liquid extraction.
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deacidification of rice bran Oil by liquid liquid extraction using a renewable solvent
Separation and Purification Technology, 2014Co-Authors: Christianne Elisabete Da Costa Rodrigues, Elaine C. Marcon, Cintia B. Gonçalves, Eduardo A C Batista, Antonio J A MeirellesAbstract:Abstract The deacidification of rice bran Oil by continuous liquid–liquid extraction using aqueous ethanol as the solvent was investigated in a perforated rotating disc column (PRDC). The influence of partial acylglycerols and minor compounds, such as phosphorus and nutraceutical compounds, on the free fatty acid mass transfer was observed. The experimental results show that total deacidification by solvent extraction is feasible. The losses in Neutral Oil, tocols and γ-oryzanol were significantly lower than those reported in the literature for alkali or physical refining of rice bran Oil. A simulation of the extraction process was also performed, and the simulated results were in good agreement with the experimental data.
Eduardo Augusto Caldas - One of the best experts on this subject based on the ideXlab platform.
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Desacidificação de oleos vegetais por extração liquido-liquido : equilibrio de fases e simulação do processo
[s.n.], 2018Co-Authors: Eduardo Augusto CaldasAbstract:Orientadores: Antonio Jose de Almeida Meirelles, Maria Regina Wolf MacielTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de AlimentosResumo: Óleos vegetais podem ser desacidificados através de processos convencionais como refino químico e fisico. O refino químico, aplicado à maioria das matérias-primas, pode causar grandes perdas de óleos neutros. Para óleos de alta acidez, o refino fisico também é possível. mas pode provocar alterações indesejáveis na cor e redução da estabilidade oxidativa. Uma alternativa é a desacidificação por extração líquido-líquido, processo conduzido à temperatura ambiente e pressão atmosférica. O conhecimento do equilibrio de fases de sistemas óleos vegetais, ácidos graxos, solventes é importante para o projeto de equipamentos adequados à implementação da extração líquido-líquido. No presente trabalho, os modelos NRTL e UNIQUAC foram ajustados a dados experimentais dos sistemas óleo de canola, ácido oléico, álcoois de cadeia curta. Alguns dos parâmetros de interação binária dos modelos de contribuição de grupos UNIFAC e ASOG também foram ajustados a dados experimentais temários, permitindo a predição do equilibrio de fases de sistemas multicomponentes com sucesso. A transferência de diglicerídeos e a perda de óleo neutro para a fase extrato foram calculadas e apresentaram pequenos desvios quando comparadas a dados experimentais. O algoritmo desenvolvido por Naphtali e Sandholm foi adaptado para a simulação de colunas de extração líquido-líquido. Os resultados indicaram as melhores condições para a desacidificação de óleos vegetais por extração líquido-líquido. A relação solvente/óleo bruto, número de estágios, porcentagem de água no etanol puderam ser selecionados para garantir uma redução de ácidos graxos livres com um mínimo de perda de óleo neutro. Planejamento fatorial e análise de superficie de resposta foram utilizados como potente ferramenta na otimização do processo de desacidificação por extração líquido-líquido.Abstract: Vegetable Oils can be deacidified by conventional process such as aIkaline and physical refining. AIkaline refining is applicable for all raw materiaIs, however, it can result in great losses of Neutral Oil. For high acidity Oils, physical refining is aIso a possibility, but can cause undesirable alterations in color and reduction of stability to oxidation. Another possibility is the deacidification through liquid-liquid extraction, process carried out at room temperature and atmosferic pressure. A knowledge of the liquid-liquid equilibrium of vegetable Oils, fatty acids and solvents is important for the design of adequate equipments for the implementation of the liquid-liquid extraction. In the present work, NRTL and UNIQUAC models were adjusted to experimental data for systems of canola Oil, oleic acid and short chain alcohols. Some UNIFAC and ASOG group interaction parameters were aIso adjusted to ternary experimental data and these parameters allowed a quite sucessful prediction of liquid-liquid equilibrium for multicomponent systems.The diglyceride transfer and loss of triglycerides to the extract phase were calculated and presented a good agreement with the experimental data. The algorithm developed by Naphtali and Sandholm was adapted to liquid-liquid extraction. The results obtained indicate the best conditions for deacidification by solvent extraction. The solvent to crude Oil ratio, the number of stages and the water percent in ethanol could be selected to reach the ftee fatty acids content lower than 0.3 % in the refined Oil with minimum losses of Neutral Oil. Factorial design and surface analysis response were used as a powerful tool in the optimization of the liquid-liquid extraction.DoutoradoDoutor em Engenharia de Alimento