Study of Solubility in Supercritical Fluids: Thermodynamic Concepts and Measurement Methods - A Review

Rad, Hadi Behjati; Karimi-Sabet, Javad; Varaminian, Farshad

doi:10.1590/0104-6632.20190364s20170493

Cited by 23 publications

(11 citation statements)

References 190 publications

(186 reference statements)

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“…However, no solubility data has been reported on polyprenol-supercritical carbon dioxide system. There are different models to study and estimate the solubility of solute-supercritical fluid including, solubility parameter model, semiempirical methods, equation of state and molecular dynamic simulation 35 . In the current study the solubility of polyprenol in carbon dioxide was correlated with other parameters such as pressure, temperature, CO 2 density and co-solvent.…”

Section: Resultsmentioning

confidence: 99%

Supercritical-CO2 extraction, identification and quantification of polyprenol as a bioactive ingredient from Irish trees species

Alaydi

Downey

McKeon-Bennett

et al. 2021

Sci Rep

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This study ascertained the accumulation of polyprenol from four Irish conifer species Picea sitchensis, Cedrus atlantica ‘Glauca’, Pinus sylvestris and Taxus baccata and one flowering tree Cotoneaster hybrida using supercritical fluid extraction with carbon dioxide (SFE-CO2) and solvent extraction. The effects of SFE-CO2 parameters such as temperature (ranged from 40 to 70 $$^\circ{\rm C}$$ ∘ C ), pressure (ranged from 100 to 350 bars) and dynamic time (from 70 min to 7 h) were analysed on the extraction efficiency of polyprenol. Qualitative and quantitative analysis of polyprenol was examined using high-performance liquid chromatography. Results showed that P. sylvestris accumulated the highest polyprenol yield of 14.00 ± $$0.4$$ 0.4 mg g−1 DW when extracted with hexane:acetone (1:1 v/v). However, with SFE-CO2 conditions of 200 bars, 70 $$^\circ{\rm C}$$ ∘ C , 7 h, with absolute ethanol as a cosolvent with a flow rate of 0.05 ml min−1, P. sitchensis accumulated the highest polyprenol yield of 6.35 ± $$0.4$$ 0.4 mg g−1DW. This study emphasised the potential application of SFE-CO2 in the extraction of polyprenol as an environmentally friendly method to be used in pharmaceutical and food industries.

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Section: Resultsmentioning

confidence: 99%

Supercritical-CO2 extraction, identification and quantification of polyprenol as a bioactive ingredient from Irish trees species

Alaydi

Downey

McKeon-Bennett

et al. 2021

Sci Rep

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“…Among the many encapsulation techniques, there are also those based on supercritical fluid technology (SFT). SFT has many advantages, such as reduced environmental impact, low waste toxicity, and enhanced product quality and safety [ 9 ]. This technique stands out in encapsulating thermolabile particles (i.e., those that can be readily destroyed or deactivated by heat) and for creating size-controlled particles [ 11 ].…”

Section: Encapsulation Technologiesmentioning

confidence: 99%

“…The lack of transition between those two phases provides a great solubilizing capability to the supercritical fluid (SCF), which increases with higher pressure values at a constant temperature. SCF refers to a single-phase matter in a non-condensing state near the critical point, which is sensitive to changes in pressure and temperature, once the slightest variation in these parameters leads to noticeable changes in density, resulting in a more gaslike or liquidlike fluid [ 9 , 42 , 74 , 75 ].…”

Section: Biopesticide Encapsulation Based On Supercritical Fluid Techmentioning

confidence: 99%

“…The most widely used supercritical fluid in encapsulation processes is supercritical carbon dioxide (scCO 2 ), due to its low toxicity, low cost, non-flammability, easy removal [ 11 ], permeability, and mild critical properties (critical temperature, T c = 304.25 K and critical pressure, P c = 7.38 MPa), so it is suitable for processing thermolabile compounds. On the other hand, scCO 2 has some drawbacks, such as non-polarity and solute–solvent interactions, which can be formed due to carbon dioxide’s electron donor and acceptor sites [ 9 , 78 , 79 ].…”

Section: Biopesticide Encapsulation Based On Supercritical Fluid Techmentioning

confidence: 99%

“…There are several methods of encapsulation, such as emulsification, coacervation, and spray drying [ 7 ]. However, the use of supercritical fluid technology to encapsulate particles has also been explored due to its having several advantages, mainly low environmental impact and high purity [ 9 , 10 ]. Carbon dioxide is the most frequently used supercritical fluid since it has low toxicity, low cost, easy removal, and mild critical properties [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biopesticide Encapsulation Using Supercritical CO2: A Comprehensive Review and Potential Applications

2021

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As an alternative to synthetic pesticides, natural chemistries from living organisms, are not harmful to nontarget organisms and the environment, can be used as biopesticides, nontarget. However, to reduce the reactivity of active ingredients, avoid undesired reactions, protect from physical stress, and control or lower the release rate, encapsulation processes can be applied to biopesticides. In this review, the advantages and disadvantages of the most common encapsulation processes for biopesticides are discussed. The use of supercritical fluid technology (SFT), mainly carbon dioxide (CO2), to encapsulate biopesticides is highlighted, as they reduce the use of organic solvents, have simpler separation processes, and achieve high-purity particles. This review also presents challenges to be surpassed and the lack of application of SFT for biopesticides in the published literature is discussed to evaluate its potential and prospects.

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Oil separation process of Citrus sinensis orange: simulation and techno‐economic evaluation

Santos

Calado

Bojorge

2022

Biofuels Bioprod Bioref

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This work focuses on modeling, simulation and techno‐economic analysis, motivated by the great potential for transforming the residues of sweet orange peel (Citrus sinensis) from the food industry into products with higher added value. A techno‐economic analysis of the extraction process of limonene and linalool using supercritical CO2 in a continuous flow was carried out on an industrial scale. The process was simulated using the Soave–Redlich–Kwong (SRK) thermodynamic equilibrium model. In order to find the maximum separation process yield, a 33 factorial design was used to analyze the main process factors, which were temperature, pressure, and solvent feed rate. Limonene was the principal component extracted. The optimum conditions for limonene extraction using a 12‐stage differential extractor were 50°C, 1930 kg h−1 and pressure around 74 bar, representing a 99.5% extraction from orange peel oil. The analyzed process conditions showed that the solution became saturated when the CO2/oil feed ratio was >19.7 kg h−1. Under these conditions, the cost of manufacturing was US$148.04 per kg of orange peel oil. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd

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Study of Solubility in Supercritical Fluids: Thermodynamic Concepts and Measurement Methods - A Review

Cited by 23 publications

References 190 publications

Supercritical-CO2 extraction, identification and quantification of polyprenol as a bioactive ingredient from Irish trees species

Supercritical-CO2 extraction, identification and quantification of polyprenol as a bioactive ingredient from Irish trees species

Biopesticide Encapsulation Using Supercritical CO2: A Comprehensive Review and Potential Applications

Oil separation process of Citrus sinensis orange: simulation and techno‐economic evaluation

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