Modeling of supercritical fluid extraction from herbaceous matrices

Reverchon, Ernesto; Donsı̀, Giorgio; Osséo, Libero Sesti

doi:10.1021/ie00023a039

Cited by 188 publications

(102 citation statements)

References 11 publications

(19 reference statements)

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“…The highest quality of a sage essential oil is linked to the amount of -and -thujone (>50%) and camphor (<20%) [16,17]. Height molecular weight compounds are more likely to be extracted by supercritical carbon dioxide than by distillation.…”

Section: Comparison Of Essential Oil Composition Of Salvia Officinalimentioning

confidence: 99%

“…Although distillation is a very convenient method for extracting essential oils, some disadvantages are caused by the artefacts produced during the process, especially when thermolabile components are involved [14]. Supercritical fluid extraction (SFE) is an interesting technique to resolve the problem occurred by the hydrodistillation, and different study have been reported in the literature [15][16][17][18][19]. Concerning the antioxidants properties of sage [20][21][22][23] the different studies developed in the literature conclude that the top of the aerial part contribute mainly to the antioxidant activity.…”

Section: Introductionmentioning

confidence: 99%

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Current developments in interim transport (storage) media in dentistry: an update

Malhotra

2011

Br Dent J

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Salvia officinalis L. (Lamiaceae) is a perennial woody shrub, cultivated in theMediterranean countries, mainly to obtain dried leaves used as raw material in medicine, perfumery and food industry. The aim of this paper is to compare the antioxidant properties and the chemical composition of essentials oils obtain by two extraction process: the hydrodistillation and the supercritical carbon dioxide extraction. The hydrodistillation is a traditional process used to obtain the essential oils from the sage while the supercritical fluid extraction (SFE) is a new technology tested on this plant. The chemical composition has been investigated by the performance of GC and GC/MS, and the antioxidant properties are compared using the DPPH free radical method. In the same time the effects of the extraction parameters on the yield were analysed. The composition of the organic phase obtained by hydrodistillation and SFE methods is widely different. The major constituents of oil obtained by hydrodistillation are:

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Section: Comparison Of Essential Oil Composition Of Salvia Officinalimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current developments in interim transport (storage) media in dentistry: an update

Malhotra

2011

Br Dent J

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“…The higher the pressure, the greater the solvating power and the lower the extraction selectivity. The solvating power of the supercritical CO 2 is often described in terms of density, ranging from 0.15 to 1.0 g/cm 3 , with a nonlinear relation between the two variables -temperature and pressure [28,36].…”

Section: Analytical Considerationsmentioning

confidence: 99%

“…An appropriate selection of these variables will lead to the complete extraction of the target compounds in a matter of minutes [24,36]. Aspects such as particle size, sample quantity, pore size and matrix thickness are crucial to obtain satisfactory extraction yields within a reasonable time frame.…”

Section: Analytical Considerationsmentioning

confidence: 99%

Supercritical fluid extraction of polyhalogenated pollutants from aquaculture and marine environmental samples: A review

García-Rodríguez

Carro-Díaz

Lorenzo-Ferreira³

2008

J of Separation Science

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ReviewSupercritical fluid extraction of polyhalogenated pollutants from aquaculture and marine environmental samples: A review This article focuses on the state-of-the-art in sample preparation using supercritical fluid extraction (SFE), to monitor the content of polyhalogenated pollutants in aquaculture and marine environmental samples. Marine sediments and biological applications, including several types of samples matrices (fish, shellfish, seaweed and fish feed) and analyte groups (polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), polybrominated diphenylethers (PBDEs), polychlorinated dibenzop-dioxin (PCDD)/Fs and organochlorinated pesticide (OCPs)) are discussed with respect to SFE use and optimisation of conditions. We also discuss the great analytical potential of SFE, the integration of the extraction and clean-up steps for rapid sample processing justifying its use for routine work. The most recent SFE applications to the determination of these pollutants in marine environmental (biota and sediment) samples, published in the last 15 years, are reviewed.

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“…Each particle of the solute is considered to be a hot sphere cooling in a uniform medium (Li and Qiu, 2007). The model assumes that particles are spherical (Reverchon, et al, 1993;Esquivel, et al, 1999), which can produce a very big error when the shape of the particles differs greatly from spherical. Secondly, in the models only the effect of diffusion in the particles on mass transfer is taken into account.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the Extraction Process of Tea Seed Oil With Supercritical Carbon Dioxide

Feng

Lei

2015

Braz. J. Chem. Eng.

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-The kinetics of the extraction of tea seed oil with supercritical CO 2 was studied. A kinetic model of the extraction of tea seed oil using supercritical CO 2 was developed on the basis of the differential mass balance to simulate the extraction process. The model could simulate the distribution of the solute concentration in CO 2 inside the extraction bed as a function of extraction time and height of the extraction bed. The model could also simulate of the solute concentration in CO 2 at the outlet of the extractor as a function of time. The effects of the parameters such as pressure and temperature on extraction yield and the process were investigated through the model. This model could simulate satisfactorily the process of extraction with an error between simulation data and experimental data of less than 10%.

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Modeling of supercritical fluid extraction from herbaceous matrices

Cited by 188 publications

References 11 publications

Current developments in interim transport (storage) media in dentistry: an update

Current developments in interim transport (storage) media in dentistry: an update

Supercritical fluid extraction of polyhalogenated pollutants from aquaculture and marine environmental samples: A review

Modeling of the Extraction Process of Tea Seed Oil With Supercritical Carbon Dioxide

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