Solubilities of Essential Oil Components of Orange in Supercritical Carbon Dioxide

Berna, A.; Chafer, A.; Montón, Juan B.

doi:10.1021/je9903101

Cited by 32 publications

(17 citation statements)

References 15 publications

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“…There are discrepancies among the literature data of the corresponding binary systems. 12 These discrepancies were also found in the ternary system, as shown in Figure 2.…”

Section: Resultsmentioning

confidence: 80%

“…3,20,23 For instance, the value of the selectivity between limonene and linalool at 328.2 K and 110 bar is 2.24 (Figure 2), which is less than that calculated from the binary solubility data (8.5 at the same conditions). 12 This is evidence that molecular interactions between limonene and linalool cannot be neglected. It also suggests that relevant errors can be made when only binary VLE behavior analysis is included in the designing of a supercritical extraction process.…”

Section: Resultsmentioning

confidence: 98%

“…This behavior was found in the binary systems. 12 Finally, increasing the amount of solute fed to the system increases the solute solubility.…”

Section: Resultsmentioning

confidence: 99%

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High Pressure Solubility Data of the System Limonene + Linalool + CO₂

et al. 2001

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The feasibility of deterpenating orange peel oil with supercritical CO2 depends on relevant vapor−liquid equilibrium data because the selectivity of this solvent for limonene and linalool (the two key components of the oil) is of crucial importance. In this work the solubility data for the CO2 + limonene + linalool ternary system were measured at (318.2 and 328.2) K. The range of pressures covered was from (70 to 110) bar. Two different mixtures of limonene + linalool were used: a 40 mass % limonene + 60 mass % linalool mixture and a 60 mass % limonene + 40 mass % linalool mixture. To correlate the obtained results, two equations of state were successfully used (Peng−Robinson (PR) and Soave−Redlich−Kwong (SRK)).

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“…There are discrepancies among the literature data of the corresponding binary systems. 12 These discrepancies were also found in the ternary system, as shown in Figure 2.…”

Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 98%

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High Pressure Solubility Data of the System Limonene + Linalool + CO₂

et al. 2001

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“…Due to this, this process in principle is also feasible for obtaining micelles loaded with active com- pounds extracted from essential oils: the solubility of many essential oil compounds in carbon dioxide at moderate pressures is much lower than that of organic solvents (e.g. at 7 MPa and 313 K, the solubility of linalool, a typical essential oil component, in supercritical carbon dioxide is approximately 1/25 of that of hexane [89,90]), and in any case the fraction of essential oil compound extracted during micelle formation can be easily recovered and recycled by depressurization of the gas effluent. Still the experimental validation of this approach has not been carried out.…”

Section: Encapsulation In Micelles and Liposomesmentioning

confidence: 99%

Encapsulation and Co-Precipitation Processes with Supercritical Fluids: Applications with Essential Oils

Martín¹,

Varona²,

Navarrete³

et al. 2010

TOCENGJ

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Essential oils have important commercial applications as preservatives and flavours, and more recently as natural antimicrobial agents. These applications require a suitable formulation constituted by biodegradable compounds that protect the essential oil from degradation and evaporation at the same time that allows for a sustained release. Microcapsules of biopolymers loaded with essential oils meet these requirements. Such microcapsules can be prepared with different processes such as spray-drying, freeze-drying and coacervation, and supercritical fluids are an advantageous medium for this purpose. Some supercritical fluid-based precipitation processes have already been applied to produce these microcapsules. Amongst them, the results obtained with Particles from Gas Saturated Solutions (PGSS), PGSS-drying and Concentrated Powder Form (CPF) processes are particularly promising. Recent developments in the preparation of formulations with supercritical fluids include the preparation of liposomes and micelles, which can be suitable carriers for essential oils.

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“…The latter are necessary in order to design and evaluate the carotene extraction process. The semiempirical model of Chrastil is very simple and provides a good correlation between experimental and calculated data (14,15); this model may be useful in predicting the total carotene content.…”

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Solubility in supercritical carbon dioxide of the predominant carotenes of tomato skin

Gómez-Prieto

Caja

Santa-Marı́a

2002

J Americ Oil Chem Soc

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Solubilities in supercritical carbon dioxide of the predominant carotenes in tomato skin were measured. The use of a polymeric C 30 RP-HPLC column to analyze the tomato extract made it possible to separate several geometric isomers from each carotene extracted. The Chrastil model was used to assign a solubility equation to each extracted carotene. Different solubility behaviors in supercritical carbon dioxide were shown by carotenes depending on their nature and configuration. The most soluble carotene was all-trans-phytoene and the least soluble was all-trans-lycopene. Significant differences in solubility were observed between the trans and cis isomers of lycopene. The results indicate that a fractionation of the tomato skin carotenes can be achieved by using supercritical CO 2 extraction.Paper no. J10111 in JAOCS 79, 897-902 (September 2002). KEY WORDS:Carotenes, solubility, supercritical carbon dioxide, tomato. EXPERIMENTAL PROCEDURESReagents. Lycopene, 90-95% purity, and α-tocopherol, 99% purity, were obtained from Sigma Chemical (St. Louis, MO); and all-trans-β-carotene, 97% purity, and β-apo-8′-carotenal, 98% purity, were purchased from Fluka Chemical (Buchs, Switzerland). All HPLC-grade solvents, including methanol, dichloromethane, and methyl t-butyl ether (MTBE), were FIG. 2. Carotene contents in the extract obtained using a 313 K extraction vessel temperature and 400 g/L CO 2 density. (A) HPLC chromatogram of phytofluene monitored at 347 nm, and (B) HPLC chromatogram of phytoene peaks at 285 nm. The numbered peaks are tentatively assigned to (1) all-trans-phytofluene; (1') cis-phytofluene; (2) α-tocopherol; (3) all-trans-phytoene; (3') cis-phytoene.

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Solubilities of Essential Oil Components of Orange in Supercritical Carbon Dioxide

Cited by 32 publications

References 15 publications

High Pressure Solubility Data of the System Limonene + Linalool + CO₂

High Pressure Solubility Data of the System Limonene + Linalool + CO₂

Encapsulation and Co-Precipitation Processes with Supercritical Fluids: Applications with Essential Oils

Solubility in supercritical carbon dioxide of the predominant carotenes of tomato skin

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Solubilities of Essential Oil Components of Orange in Supercritical Carbon Dioxide

Cited by 32 publications

References 15 publications

High Pressure Solubility Data of the System Limonene + Linalool + CO2

High Pressure Solubility Data of the System Limonene + Linalool + CO2

Encapsulation and Co-Precipitation Processes with Supercritical Fluids: Applications with Essential Oils

Solubility in supercritical carbon dioxide of the predominant carotenes of tomato skin

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Product

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High Pressure Solubility Data of the System Limonene + Linalool + CO₂

High Pressure Solubility Data of the System Limonene + Linalool + CO₂