(Liquid+liquid) equilibrium for the system (hydrolyzed palm oil+ethanol+water) for diacylglycerol enrichment

Voll, Fernando Augusto Pedersen; Kanda, Luis Ricardo Shigueyuki; Cardozo‐Filho, Lúcio; Corazza, Marcos L.

doi:10.1016/j.jct.2012.10.009

Cited by 18 publications

(9 citation statements)

References 23 publications

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“…The functions to potentially prevent postprandial lipemia, cardiopathy and obesity of DAG had been proved in both clinical and animal studies [9]. Around 2000, in Japan and United States, the DAG-rich cooking oil (DAG ≥80 wt%) have been commercialized [10]. The stability of autoxidation and thermal oxidation (about 170 °C) of DAG cooking oil were found to be similar or even slightly better than conventional triacylglycerols (TAG) oil [11].…”

Section: Introductionmentioning

confidence: 99%

Fast Production of Diacylglycerol in a Solvent Free System via Lipase Catalyzed Esterification Using a Bubble Column Reactor

Liu

Teng

et al. 2016

J Americ Oil Chem Soc

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to comparison of the ED. The new process showed a very high efficiency in production of DAG with a high purity.The ratio of positional isomers 1,3-DAG to 1,2 -DAG was 2:1 in the final product. The certain plasticity (melting point of 44 °C) and content of unsaturated fatty acids made the product a valuable food ingredient. AbbreviationsDAG Diacylglycerols FFA Free fatty acids TAG Triacylglycerols ED Esterification degree BCR Bubble column reactor MAG Monoacylglycerols 1 H-NMR 1 H-nuclear magnetic resonance XRD X-ray powder diffraction DSC Differential thermal scanners PLM Polarized light microscopeAbstract In this study, diacylglycerols (DAG) were synthesized rapidly (~30 min) in a solvent-free system via esterification of glycerol with fatty acids (FA, the mixture of 60 wt% palm oil deodorizer distillate and 40 wt% oleic acid) catalyzed by Lipozyme 435 (Novozymes A/S, Copenhagen, Denmark) using a bubble column reactor. The content of DAG, monoacylglycerols (MAG), triacylglycerols (TAG) and free fatty acids (FFA) in the crude product were 57.94 ± 1.60 wt%, 24.68 ± 2.08 wt%, 2.67 ± 1.72 wt% and 14.69 ± 1.22 wt%, respectively under the selected conditions, which were enzyme load of 5.0 wt%, glycerol/FA mole ratio of 7.5, initial water content of 2.5 wt%, reaction temperature of 60 °C, reaction time of 30 min and N 2 gas flow of 10.6 cm min −1 . The final product containing 91.30 ± 1.10 wt% of DAG was obtained by onestep molecular distillation at 200 °C. The reusability of Lipozyme 435 was investigated by evaluating the esterification degree (ED) and the DAG content in the crude products in 30 successive runs. The enzyme retained 95.10 % of its original activity during 30 successive runs according Electronic supplementary material The online version of this article (

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Section: Introductionmentioning

confidence: 99%

Fast Production of Diacylglycerol in a Solvent Free System via Lipase Catalyzed Esterification Using a Bubble Column Reactor

Liu

Teng

et al. 2016

J Americ Oil Chem Soc

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“…Previous papers reported equilibrium data for systems composed by oil + ethyl ester + ethanol [5], TAG + DAG + MAG + fatty acids (obtained from palm oil hydrolysis) + ethanol + water [6] and TAG + DAG + MAG + ester + glycerol + methanol [4]. None of these studies contain systems composed by partial acylglycerols (DAG and MAG), ester and ethanol.…”

Section: Introductionmentioning

confidence: 99%

Liquid–liquid equilibrium of systems containing triacylglycerols (canola and corn oils), diacylglycerols, monoacylglycerols, fatty acids, ester and ethanol at T/K=303.15 and 318.15

Ferreira

Bessa

Shiozawa

et al. 2015

Fluid Phase Equilibria

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“…Free fatty acid quantification was performed according to the procedure described by Voll et al [6]. The molar mass of FFA obtained from olive oil was considered 277.875 g.mol -1 .…”

Section: Free Fatty Acid Quantificationmentioning

confidence: 99%

“…For an appropriate process and equipment design, mathematical models are usually required. Voll et al [6] obtained liquid-liquid UNIQUAC and NRTL interaction parameters for the system TAG + DAG + MAG + FFA + ethanol + water by correlating experimental data with the Gibbs free energy models, and verified the potential of DAG enrichment by liquid-liquid extraction strategy using ethanol and water as solvents. The water phase tends to have less TAG molecules, due to its higher hydrophobicity when compared to DAG, MAG and FFA.…”

Section: Introductionmentioning

confidence: 99%

“…Independently of the process used, the final product will contain a mixture of triacylglycerols, diacylglycerols, monoacylglycerols and free fatty acids (FFA), which are molecules with main polar groups, and so can be easily separated from glycerol and water present in the reactant medium. A further separation process is normally necessary to separate the diacylglycerols from the other molecules, and that can be achieved with distillation [5] or liquid-liquid extraction with polar solvents [6].…”

Section: Introductionmentioning

confidence: 99%

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Liquid-liquid Equilibrium in Systems Containing Olive Oil, Free Fatty Acids, Ethanol and Water

Lima¹,

Santos²,

Pereira³

et al. 2016

TOCENGJ

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This paper reports experimental data and the thermodynamic modeling of the liquid-liquid equilibrium systems with triacylglycerols, free fatty acids (obtained from olive oil), ethanol and water. The experimental data were fitted using the UNIQUAC model, in which absolute deviation of 1.28 % and root mean square deviation of 2.10 % between experimental and calculated mass fraction of the components in each phase were obtained. The results from this study can be complementary to investigations of more complex liquid-liquid equilibrium of systems containing diacylglycerols and monoacylglcerols of olive oil in hydroalcoholic solutions, once such systems will mostly also contain triacylglycerols and free fatty acids on its composition. Diacylglycerols are obtained from different reaction processes and can be purified by liquid-liquid extraction at mild conditions of temperature and pressure, what justifies the experimental and theoretical approach made in this work.

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(Liquid+liquid) equilibrium for the system (hydrolyzed palm oil+ethanol+water) for diacylglycerol enrichment

Cited by 18 publications

References 23 publications

Fast Production of Diacylglycerol in a Solvent Free System via Lipase Catalyzed Esterification Using a Bubble Column Reactor

Fast Production of Diacylglycerol in a Solvent Free System via Lipase Catalyzed Esterification Using a Bubble Column Reactor

Liquid–liquid equilibrium of systems containing triacylglycerols (canola and corn oils), diacylglycerols, monoacylglycerols, fatty acids, ester and ethanol at T/K=303.15 and 318.15

Liquid-liquid Equilibrium in Systems Containing Olive Oil, Free Fatty Acids, Ethanol and Water

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