Supercritical CO2 extraction of rosemary: Effect of extraction parameters and modelling

Bensebia, Ouahida; Barth, Danielle; Bensebia, Bensaber; Dahmani, Abdallah

doi:10.1016/j.supflu.2009.01.007

Cited by 48 publications

(23 citation statements)

References 14 publications

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“…Figure 2 shows the variation of (a) k YA with solvent velocity and (b) k XA with extraction pressure. The k YA value obtained in this work is quite in accordance with the values reported by Bensebia et al [6], asserting a k YA increase with a solvent velocity increase. However, the k XA value obtained is around one order of magnitude lower than 12 those reported by Bensebia et al [6].…”

Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 93%

“…The k YA value obtained in this work is quite in accordance with the values reported by Bensebia et al [6], asserting a k YA increase with a solvent velocity increase. However, the k XA value obtained is around one order of magnitude lower than 12 those reported by Bensebia et al [6]. This low k XA value is a result of the high particle size employed in our experimental assays (500-1000 m).…”

Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 93%

“…The OEC obtained is depicted in Figure 1, indicating the three different extraction rate periods. As can be observed in Table 4, the resulted value for X o is 0.053, which is in accordance with the 5% of global extraction yield reported by Carvalho et al [4] at 30 MPa and 313 K. Table 5 presents a comparison between the parameters (X k , k YA and k XA ) regressed using Sovova's model in low-scale OEC [4,6] and in the pilot-scale OEC measured in this work. Figure 2 shows the variation of (a) k YA with solvent velocity and (b) k XA with extraction pressure.…”

Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 87%

“…The works reported by Bensebia et al [6], Carvalho et al [4], Reverchon and Sanatore [5], Celiktas et al [8], Ibáñez et al [3,9] and Cavero et al [10] are some examples of 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 5 the abundant studies reported in the literature about rosemary SCCO 2 extraction. All these works were carried out over analytical (less than 1-4 grams of sample) or lowscale apparatus (30-100 grams of sample).…”

Section: Introductionmentioning

confidence: 97%

“…SFE extracts at 30 MPa and 313 K resulted to be the ones with the highest concentration of carnosic acid (up to 21.5 %wt) with an overall extraction yield around 5.0%. As well, Bensebia et al [6] present a study about the effect of several process parameters (solvent flow rate, extraction pressure and temperature, fractionation of the extract) on 4 the SFE of rosemary leaves (0.01 kg) and calculated the corresponding mass transfer coefficients on the basis of Sovova model [7].…”

Section: Introductionmentioning

confidence: 99%

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Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

García-Risco

Hernández

Vicente

et al. 2011

The Journal of Supercritical Fluids

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Esta es la versión de autor del artículo publicado en: This is an author produced version of a paper published in:Journal of Supercritical Fluids 55 (2011) AbstractRosmarinus officinalis (rosemary) extracts were obtained in a supercritical pilot-scale plant. Based on experimental information available in the literature for analytical or low-scale processes, extraction temperature and pressure were selected to be 313 K and 30 MPa. At these extraction conditions, the kinetic behavior of the pilot-scale overall extraction curve were determined with respect to yield, antioxidant activity and carnosic acid content. The overall extraction curve was represented using Sovova's model; the average deviation between measured and calculated yields was lower than 2%. Mass transfer coefficients in the fluid and solid phases were determined and were compared with previous data reported in the literature for low-scale rosemary supercritical extraction.A two-stage depressurization procedure was accomplished and the effect of both on-line fractionation and extraction time on the antioxidant activity of the samples collected was studied. The antioxidant activity of the different fractions could be straight correlated with the carnosic acid content with a regression coefficient of 0.92.

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Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 93%

Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 93%

Section: Mathematical Modeling Of the Large-scale Oecsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

García-Risco

Hernández

Vicente

et al. 2011

The Journal of Supercritical Fluids

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The effect of pressure on the characteristics of supercritical carbon dioxide extracts from Calamintha nepeta subsp. nepeta

Debbabi

Mokni

Majdoub

et al. 2020

Biomedical Chromatography

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Chemists and industrialists are continuously attempting to develop greener and more environmentally benign chemical processes to extract essential oils and bioactive metabolites of high purity, finding various applications in cosmetics, detergents, nutraceuticals and pharmaceuticals. An increase preferenced for natural products over synthetic ones has made supercritical fluid technology a primary alternative for the generation of high‐value bioactive ingredients. This effective technique requires only moderate temperatures, eliminates clean‐up steps and avoids the use of harmful organic solvents. In this context, our study was focused on the chemical analysis of Calamintha nepeta subsp. nepeta aromatic extracts obtained with supercritical carbon dioxide. The effect of different operating conditions on the capacity of the lipophilic solvent to extract the targeted volatile components was also studied. The process was carried out at a fairly low constant temperature of 40°C, and with varying the pressure from 90 to 300 bar. The chemical composition of the extracts was analyzed by gas chromatography–mass spectroscopy. The results showed that the composition pattern, the concentrations of individual components and the quality of the extractable analytes were affected by pressure increase. The extraction yields varied from 0.73 to 1.21 wt% at 90 and 300 bar, respectively.

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Supercritical CO₂ Extraction of Chlorophyll a from Spirulina platensis with a Static Modifier

et al. 2010

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Supercritical CO 2 extraction with a static modifier was applied to extract chlorophyll a from Spirulina platensis. The effects of the process were investigated by single-factor and response surface analysis experiments. The optimal process parameters for supercritical CO 2 extraction were determined to be: ethanol/water as the modifier, 40 vol.-% water content in the modifier, 21.2 mL modifier volume, 1 h static soaking time, 2 h dynamic extraction time, 48.7 MPa extraction pressure, 326.4 K extraction temperature, and 10 g min -1 CO 2 flow rate. The optimized chlorophyll a extraction yield was 6.84 mg g -1. A comparison of the experimental results suggested that the yield of chlorophyll a by supercritical CO 2 extraction with modifier was higher than that obtained by conventional solvent extraction.

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Supercritical CO2 extraction of rosemary: Effect of extraction parameters and modelling

Cited by 48 publications

References 14 publications

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

The effect of pressure on the characteristics of supercritical carbon dioxide extracts from Calamintha nepeta subsp. nepeta

Supercritical CO₂ Extraction of Chlorophyll a from Spirulina platensis with a Static Modifier

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Supercritical CO2 extraction of rosemary: Effect of extraction parameters and modelling

Cited by 48 publications

References 14 publications

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves

The effect of pressure on the characteristics of supercritical carbon dioxide extracts from Calamintha nepeta subsp. nepeta

Supercritical CO2 Extraction of Chlorophyll a from Spirulina platensis with a Static Modifier

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Supercritical CO₂ Extraction of Chlorophyll a from Spirulina platensis with a Static Modifier