Solubility of triacylglycerols in supercritical carbon dioxide

Soares, Beatriz Maria Curtio; Gamarra, Félix Martin Carbajal; Paviani, Losiane C.; Gonçalves, Lireny Aparecida Guaraldo; Cabral, Fernando A.

doi:10.1016/j.supflu.2007.03.013

Cited by 68 publications

(24 citation statements)

References 12 publications

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“…to the difference between the solubility of the three main TGs (i.e. POP, SOS and POS) (Asep et al, 2008;Scheider et al, 2000;Soares, Gamarra, Paviani, Gonçalves, & Cabral, 2007). In this case, the amount of short-chain TGs decreased, whereas that of the long-chain TGs increased.…”

Section: Tablementioning

confidence: 94%

“…In fact, POP was more quickly extracted at the beginning of the extraction process whereas SOS was more quickly extracted at the end. Soares et al (2007) reported that the solubility of the pure TGs was significantly (p b 0.05) influenced by the temperature and length of fatty acid chains. The authors also found that the solubility of the supercritical carbon dioxide varied as a function of the molecular weight of triacylglycerols containing saturated fatty acids.…”

Section: Tablementioning

confidence: 99%

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Effects of polar cosolvents on cocoa butter extraction using supercritical carbon dioxide

Asep

Selamat

Jahurul

et al. 2013

Innovative Food Science & Emerging Technologies

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Section: Tablementioning

confidence: 94%

Section: Tablementioning

confidence: 99%

Effects of polar cosolvents on cocoa butter extraction using supercritical carbon dioxide

Asep

Selamat

Jahurul

et al. 2013

Innovative Food Science & Emerging Technologies

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“…Initially, a factorial experiments design was carried out in duplicate based on the operation limits of the equipment and the reports about solubility and supercritical CO 2 extraction (Chrastil, 1982;Nilsson et al, 1991;Guclu-Ustundag and Temelli, 2000;Soares et al, 2007;Follegatti-Romero et al, 2009;Martínez and De Aguiar, 2014). This experimental design employed a fixed bed of glass beads of 4 mm and raschig rings at a temperature of 40 and 60 °C, pressure of 180 and 350 bars and CO 2 flow of 40 and 200 g/min for 30 min.…”

Section: Methodsmentioning

confidence: 99%

Supercritical CO<sub>2</sub> extraction of oil and omega-3 concentrate from Sacha inchi (<em>Plukenetia volubilis</em> L.) from Antioquia, Colombia

2017

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SUMMARY:Sacha inchi (Plukenetia volubilis L.) seeds were employed for oil extraction with supercritical CO 2 at laboratory scale. The supercritical extraction was carried out at a temperature of 60 °C, pressure range of 400-500 bars and CO 2 flow of 40-80 g/min. The maximum recovery was 58% in 180 min, favored by increasing the residence time of CO 2 in the extraction tank. Subsequently, the process was evaluated at pilot scale reaching a maximum recovery of 60% in 105 min, with a temperature of 60 °C, pressure of 450 bars and CO 2 flow of 1270 g/min. The fatty acid composition of the oil was not affected for an extraction period of 30-120 min. The Sacha inchi oil was fractionated with supercritical CO 2 to obtain an omega-3 concentrate oil without finding a considerable increase in the proportion of this compound, due to the narrow range in the carbon number of fatty acids present in the oil (16-18 carbons), making it difficult for selective separation. KEYWORDS: a -linolenic acid; Omega-3; Sacha inchi; Supercritical extractionRESUMEN: Extracción con CO 2 supercrítico de aceite y un concentrado de omega-3 a partir de Sacha inchi (Plukenetia volubilis L.) proveniente de Antioquia, Colombia. Semillas de Sacha inchi fueron empleadas para la extracción de su aceite con CO 2 supercrítico a escala de laboratorio, a una temperatura de 60 °C, entre 400-500 bares de presión y un flujo de CO 2 entre 40-80 g/min, obteniendose una recuperación máxima del 58% en 180 min favorecida por el aumento en el tiempo de residencia del CO 2 en el tanque de extracción. Posteriormente, se evaluó el proceso a escala piloto, alcanzando una recuperación máxima del 60% en 105 min de extracción, a una temperatura de 60 °C, presión de 450 bares y flujo de CO 2 de 1270 g/min, sin afectar la composición de los ácidos grasos del aceite durante un periodo de extracción entre 30-120 min. El aceite de Sacha inchi fue fraccionado con CO 2 supercrítico para la obtención de un aceite concentrado de omega-3, sin encontrar aumento considerable en la proporción de este compuesto debido al estrecho rango en el número de carbonos (16-18 carbonos) de los ácidos grasos presentes en el aceite, lo que dificulta su separación selectiva.

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“…The value obtained by Rónyai et al [7] has been also plotted in Figure 4. In this Figure, the solubility values of corn germ oil at 40 ºC obtained by Soares et al [20] have been also included.…”

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 99%

Supercritical fluid extraction of corn germ oil: Study of the influence of process parameters on the extraction yield and oil quality

Rebolleda

Rubio

Beltrán

et al. 2012

The Journal of Supercritical Fluids

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The supercritical fluid extraction of corn germ oil has been studied in this work.Extractions were carried out at different pressure, temperature and flow rate to analyse the influence of these variables on the extraction kinetics and the oil quality obtained.Extraction curves are initially linear with a slope close to the oil solubility value in supercritical CO 2 . Based on these results a mathematical model was successfully applied to describe the extraction curves. Characterization of supercritical crude corn oil was performed by determining some physical parameters such as refraction index, density and color. Additionally, the fatty acid composition, neutral lipids, the content of tocopherols, acid index, peroxide value, antioxidant capacity and the oxidative stability * Corresponding author 3 were determined in the corn oil extracted. Fatty acid composition was compared with that for crude germ oil and no significant differences between the oils extracted by both methods were found. Oxidative stability test using the Rancimat showed that supercritical CO 2 extracted corn oil is less protected against oxidation than n-hexane extracted oils.

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Solubility of triacylglycerols in supercritical carbon dioxide

Cited by 68 publications

References 12 publications

Effects of polar cosolvents on cocoa butter extraction using supercritical carbon dioxide

Effects of polar cosolvents on cocoa butter extraction using supercritical carbon dioxide

Supercritical CO<sub>2</sub> extraction of oil and omega-3 concentrate from Sacha inchi (<em>Plukenetia volubilis</em> L.) from Antioquia, Colombia

Supercritical fluid extraction of corn germ oil: Study of the influence of process parameters on the extraction yield and oil quality

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