Modeling of extraction of β-carotene from apricot bagasse using supercritical CO2 in packed bed extractor

Döker, Onur; Salgın, Uğur; Şanal, İnci S.; Mehmetoǧlu, Ülkü; Çalımlı, Ayla

doi:10.1016/s0896-8446(03)00006-8

Cited by 101 publications

(50 citation statements)

References 12 publications

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“…2. According to the above assumptions, the dimensionless material balances for the solute in the solid and bulk phases are as follows at dynamic conditions [21] 1) :…”

Section: Mathematical Modelmentioning

confidence: 99%

“…3 at 22 MPa, 310 K and for a particle radius of 0.295 mm. Moreover, this effect can be viewed as the increasing of the flow rate resulting in the thickness of the film layer around the solid particles being reduced and mass transfer resistance surrounding the solid particle becomes smaller [21].The isotherm parameters are derived without any significant differences for runs 2 and 8, as shown in Tab. 3.…”

Section: Effect Of Sc-co 2 Flow Ratementioning

confidence: 99%

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Mathematical Modeling of Supercritical Extraction of Valerenic Acid from Valeriana officinalis L.

et al. 2008

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The dynamic behavior of supercritical fluid extraction (SFE) of valerenic acid (VA) from valerian (Valeriana officinalis L.) roots was studied by mathematical modeling. The extraction yield of VA was considered as the most desirable compound among the other extracted constituents. A two-phase desorption model was developed by considering a diffusion controlled regime in the particle and axial dispersion in the bed. The mass transfer parameters, i.e., pore diffusivity, film mass transfer coefficient and axial dispersion, along with the solubility parameters were chosen as the model parameters. The first three mass transfer parameters were predicted using nondimensional equations from the literature. The solubility equation and the parameters were studied using different equilibrium models, i.e., Henry, Langmuir, Freundlich, Langmuir-Freundlich (L-F) and Toth isotherms. The equilibrium parameters were correlated by comparing the outlet results of the dynamic SFE model with experiments. The experimental yield of the VA extraction was obtained at a pressure of 15.0-36.0 MPa, temperature of 310-334 K, solvent flow rate of 0.50-1.10 · 10 -6 m 3 /min and different particle sizes ranging from 0.18-2.00 · 10 -3 m in diameter, at a 20 min constant static period, in the presence of 46.9 lL/g ethanol as the co-solvent, followed by dynamic time extraction for up to 50 min. From the results, the mathematical model using the L-F equation exhibited the best agreement with the experimental yield of VA extraction in the range of studied conditions. The present model can be applied to design and scale up the SFE process of VA from Valeriana officinalis L. roots.

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“…2. According to the above assumptions, the dimensionless material balances for the solute in the solid and bulk phases are as follows at dynamic conditions [21] 1) :…”

Section: Mathematical Modelmentioning

confidence: 99%

Section: Effect Of Sc-co 2 Flow Ratementioning

confidence: 99%

Mathematical Modeling of Supercritical Extraction of Valerenic Acid from Valeriana officinalis L.

et al. 2008

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“…Therefore, many researchers have studied the extraction of carotenoids from various natural products. [4][5][6][7][8][9][10][11][12][13][14][15] However, only a few carotenoids (β-carotene, lycopene and lutein) 1,4-9,12-14 have been reported in the literature. In other words, the extraction behaviors of other carotenoids (such as α-carotene, β-cryptoxanthin and zeaxanthin) have not been evaluated in detail.…”

Section: Introductionmentioning

confidence: 99%

Carotenoids Extraction from Japanese Persimmon (Hachiya-kaki) Peels by Supercritical CO2 with Ethanol

et al. 2006

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The extraction of carotenoids from Japanese persimmon peels by supercritical fluid extraction (SFE), of which the solvent was CO2, was performed. In order to enhance the yield and selectivity of the extraction, some portion of ethanol (5 -20 mol%) was added as an entrainer. The extraction temperature ranged from 313 to 353 K and the pressure was 30 MPa. The effect of temperature on the extraction yield of carotenoids was investigated at 10 mol% of the ethanol concentration in the extraction solvent, and a suitable temperature was found to be 333 K among the temperatures studied with respect to the carotenoid yield. With increasing the entrainer amount from 0 to 10 mol% at a constant temperature (333 K), the carotenoid yield in the extraction was improved, whereas the selectivity of the extracted carotenoids was drastically depressed. We also conducted qualitative and quantitative analyses for the carotenoid components in the extract by HPLC, and analyzed the extraction behavior of each individual carotenoid (α-carotene, β-carotene, β-cryptoxanthin, lycopene, lutein, and zeaxanthin). The selectivity of each carotenoid changed with the elapsed time and its time evolution was dependent on the carotenoid component, indicating that the location profile and the content can be important factors to understand the SFE behavior of each carotenoid in persimmon peels.

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“…It is important to outline that many other models exist, of which many are frequently used but are not addressed in this work. Examples of such models are the shrinking core model [25] and the broken & intact model [26,27]. Furthermore, the feasibility of complete calibration models instead of calibration performed using single experiments was evaluated.…”

Section: Abrahamsson Et Al / J Of Supercritical Fluids 111 (2016mentioning

confidence: 99%

“…In either case the material is contained in an extraction vessel with frits on either side to ensure that the material is kept in place [1]. [14][15][16][17][18][19][20][21][22][23][24][25][26][27] http://dx.doi.org/10.1016/j.supflu.2016.01. 006 2…”

Section: Introductionmentioning

confidence: 99%

Method development in inverse modeling applied to supercritical fluid extraction of lipids

Abrahamsson

Andersson

Nilsson

et al. 2016

The Journal of Supercritical Fluids

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Modeling of the supercritical fluid extraction of solid materials is an important aspect in order to understand and predict the process. A comparison of two empirical models, two semi-empirical models and two mechanistic models is performed using calibration of single experiments. It is concluded that the best fit is obtained using a simple empirical expression. Furthermore, single calibrations did not generate reliable parameters with physical meaning and a methodology is proposed for inverse modeling with complete calibration using several experiments. The experimental dataset contained 29 extractions of lipids from crushed linseeds with varying temperatures, pressures and flow rates.A general rate model and a proposed extension of the hot ball model were evaluated for this purpose. The methodology includes data acquisition, model structure estimation, model calibration and a cross-validation. In general, it was found that the solubility model of Sovová outperformed the other evaluated correlations, and for the general rate model the Toth partition isotherm was also found in the top model structures. However, no generalization could be made regarding the correlations describing the Nernst diffusion layer and diffusivity. AbbreviationsBPR, back-pressure regulator; CV, cross-validation; DLT, diffusion-layer theory; DOE, design of experiments; EHBM, extended hot ball model; ELSD, evaporative light scattering detector; GA, genetic algorithm; GRM, general rate model; HBM, hot ball model; LHS, Latin hypercube sampling; ODE, ordinary differential equation; PSO, particle swarm optimization; RMSE, root mean square error; RMSEC, root mean square error of calibration; RMSECV, root mean square error of cross-validation; scCO2, supercritical carbon dioxide; SFE, supercritical fluid extraction

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Modeling of extraction of β-carotene from apricot bagasse using supercritical CO2 in packed bed extractor

Cited by 101 publications

References 12 publications

Mathematical Modeling of Supercritical Extraction of Valerenic Acid from Valeriana officinalis L.

Mathematical Modeling of Supercritical Extraction of Valerenic Acid from Valeriana officinalis L.

Carotenoids Extraction from Japanese Persimmon (Hachiya-kaki) Peels by Supercritical CO2 with Ethanol

Method development in inverse modeling applied to supercritical fluid extraction of lipids

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