Mathematical model for supercritical fluid extraction of natural products and extraction curve evaluation

Sovová, Helena

doi:10.1016/j.supflu.2004.03.005

Cited by 287 publications

(205 citation statements)

References 30 publications

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“…For vegetable oil extraction, Sovová [14] found that extraction curves are initially linear with a slope close to the value of oil solubility in CO 2 .…”

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 95%

“…In this work, the model proposed by Sovová [14] was used to describe the experimental extraction curves. This type of model assumes that the solute is regarded as a single pseudo compound which can lead to some errors since several components are generally involved in the extraction of the fish oil.…”

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 99%

“…Based on these findings, equation (8) and equation (9) proposed by Sovová [14] were used to evaluate the first and second part of the extraction curve respectively: According to Sovová [14], the volumetric fraction of broken cells in the particles, called grinding efficiency, r, and the solid-phase mass transfer coefficient, k s a s , can be estimated from constants C 1 , C 2 and co-ordinate q c at the crossing point:…”

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 99%

“…The Sovova's mathematical model [14] was used to describe the extraction kinetics. The remained fish meal has been characterized by determining the total protein content and toxic elements as well as its colour.…”

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confidence: 99%

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Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Bucio

Sanz

Beltrán

et al. 2016

The Journal of Supercritical Fluids

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Liquid and supercritical CO 2 has been used to extract the remaining fat content from rendered fish meal. The effect of pressure (10 -40 MPa) and temperature (25 -80 ºC) on the extraction kinetics and extraction yield has been investigated as well as the effect on the rendered fish meal. The extraction curves are initially linear with a slope close to the oil solubility value in pressurized CO 2 . Based on previous fish oil solubility data reported in the literature, a general equation has been proposed to correlate fish oil solubility data as a function of temperature and density of CO 2 . Fish meal has been * Corresponding author 2 characterized before and after extraction by determining the fat and protein content and its colour. Toxic trace elements have been also determined by ICP-MS in the fish meal showing that most of the toxic elements remained in the fish meal after extraction.Characterization of extracted oil was also performed by determining the fatty acid group composition and some physical parameters such as colour.

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“…For vegetable oil extraction, Sovová [14] found that extraction curves are initially linear with a slope close to the value of oil solubility in CO 2 .…”

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 95%

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 99%

Section: Modelling Of the Supercritical Fluid Extractionmentioning

confidence: 99%

mentioning

confidence: 99%

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Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Bucio

Sanz

Beltrán

et al. 2016

The Journal of Supercritical Fluids

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“…The parameters are the mass transfer coefficients. The model of broken and intact cells was developed by Sovová [8]. …”

Section: Broken and Intact Cells Modelmentioning

confidence: 99%

Mathematical modeling of supercritical CO₂ extraction of valuable compounds from Eucheuma Cottonii and Gracilaria Sp

et al. 2018

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Abstract. Extraction by using supercritical CO2 has been extensively developed to extract materials that are easily decomposed at high temperatures. Therefore, in this study extraction of valuable compounds (such as: carotenoids and fatty acids) from macroalgae of Eucheuma cottonii and Gracilaria sp was carried out experimentally with supercritical CO2 and mathematical model of Broken and Intact Cells (BIC) and Chrastil model. The result with BIC model is compared with the experimental result that has been done. Extraction was conducted at various pressures of 15, 20, and 25 MPa, temperature of 40, 60, and 80 o C, CO2 flow rate of 6 mL/min, and ethanol concentrations for cosolvent of 5 %, 7.5%, and 10% CO2 flow rate. The content of extract was analyzed by using a Spectrophotometer UV -Vis and HPLC. The total yield of extract on Eucheuma cottonii was about 0.01623-0.03752 gr extract/gr sample at operating conditions 15 MPa pressure, temperature 60 o C, and ethanol flow rate of 10%. The total yield of the extract on Gracilaria sp was 0.1982-0.4237 gr extract/gr samples, at operating conditions 15 MPa pressure, 60 o C temperature, and ethanol flow rate 7.5% CO2 flow rate. The solubility of Eucheuma cottonii are greater than Gracilaria Sp with constant of Chrastil k, a, and b that are: 2,52; 0,911; and -27,66 at operating conditions. Broken and Intact Cells model could also describe well for extraction yield. The best fitting parameters in BIC model depends on condition at extraction process, such as : 0.45 -0.46 for f, 0.5 -0.75 for Xc, and 0.15 -0.4 for K value..

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Supercritical Fluid Extraction

Kroon

Raynie

2010

Handbook of Sample Preparation

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Mathematical model for supercritical fluid extraction of natural products and extraction curve evaluation

Cited by 287 publications

References 30 publications

Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Mathematical modeling of supercritical CO₂ extraction of valuable compounds from Eucheuma Cottonii and Gracilaria Sp

Supercritical Fluid Extraction

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Mathematical model for supercritical fluid extraction of natural products and extraction curve evaluation

Cited by 287 publications

References 30 publications

Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Study of the influence of process parameters on liquid and supercritical CO 2 extraction of oil from rendered materials: Fish meal and oil characterization

Mathematical modeling of supercritical CO2 extraction of valuable compounds from Eucheuma Cottonii and Gracilaria Sp

Supercritical Fluid Extraction

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Mathematical modeling of supercritical CO₂ extraction of valuable compounds from Eucheuma Cottonii and Gracilaria Sp