Solubility of two vegetable oils in supercritical CO2

Sovová, Helena; Zarevúcká, Marie; Vacek, Miroslav; Stránský, Karel

doi:10.1016/s0896-8446(01)00057-2

Cited by 118 publications

(73 citation statements)

References 32 publications

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“…Indeed, this oil shows the highest content in linoleic acid (63.3 g/100 g oil), but due to a poor linolenic acid content, the PUFA n-6/PUFA n-3 ratio is very high. Our results regarding FA composition of grape seed oil are quite similar to those previously reported, with only few differences (Udayasekhara Rao, 1994;Sovová et al, 2001). Grape seed oil from India contained 8.1% of myristic acid (14:0) and less palmitic acid (16:0) (3.5%) than in the present study (7.2%).…”

Section: Fatty Acid Composition Of Vegetable Oilssupporting

confidence: 91%

“…Grape seed oil from India contained 8.1% of myristic acid (14:0) and less palmitic acid (16:0) (3.5%) than in the present study (7.2%). French grape seed oil showed slightly higher OA content and slightly lower LA content than those reported for grape seeds from Macedonia (Sovová et al, 2001). In addition, Sovová et al, 2001 reported the presence of 0.4% γ-linolenic acid (GLA, 18:3 n-6).…”

Section: Fatty Acid Composition Of Vegetable Oilsmentioning

confidence: 77%

“…French grape seed oil showed slightly higher OA content and slightly lower LA content than those reported for grape seeds from Macedonia (Sovová et al, 2001). In addition, Sovová et al, 2001 reported the presence of 0.4% γ-linolenic acid (GLA, 18:3 n-6). However, in our study, chromatograms of FAMEs prepared from grape seed oil did not show any peak in the area of GLA elution, neither GLA nor trans-ALA (GLA overlapped with some trans-ALA on the BPX-70 60-m column under analytical conditions used in the present study (Vingering and LeDoux, 2009)).…”

Section: Fatty Acid Composition Of Vegetable Oilsmentioning

confidence: 77%

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Fatty acid composition of commercial vegetable oils from the French market analysed using a long highly polar column

Vingering

Oseredczuk

Chaffaut

et al. 2010

OCL

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The increasing concern for consumed fat by western populations has raised the question of the level and the quality of fat intake, especially the composition of fatty acids (FA) and their impact on human health. As a consequence, consumers and nutritionists have requested updated publications on FA composition of food containing fat. In the present study, fourteen different kinds of edible oils (rapeseed, olive, hazelnut, argan, groundnut, grape seed, sesame, sunflower, walnut and organic walnut, avocado, wheat germ, and two combined oils) were analysed for FA determination using a BPX-70 60 m highly polar GC column. Oils were classified according to the classification of Dubois et al. (2007Dubois et al. ( , 2008. Monounsaturated FA (MUFA) group oils, including rapeseed, olive, hazelnut, and avocado oils, contained mainly oleic acid (OA). Groundnut and argan oils, also rich in MUFA, showed in addition high linoleic acid (LA) contents. In the polyunsaturated (PUFA) group, grape seed oil presented the highest LA content while sunflower, sesame, and wheat germ oils showed noticeable MUFA amounts in addition to high PUFA contents. Walnut oils, also rich in LA, showed the highest linolenic acid (ALA) content. The n-6/n-3 ratio of each oil was calculated. Trans-FA (TFA) was also detected and quantified. Results were compared with the data published during the past decade, and the slight discrepancies were attributed to differences in origin and variety of seed-cultivars, and in seed and oil processes.

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Section: Fatty Acid Composition Of Vegetable Oilssupporting

confidence: 91%

Section: Fatty Acid Composition Of Vegetable Oilsmentioning

confidence: 77%

Section: Fatty Acid Composition Of Vegetable Oilsmentioning

confidence: 77%

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Fatty acid composition of commercial vegetable oils from the French market analysed using a long highly polar column

Vingering

Oseredczuk

Chaffaut

et al. 2010

OCL

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“…For both the EHBM and the GRM the Sovová et al [49] solubility expression almost exclusively found among all of the top candidate model structures. The same observation was made for the Toth partition isotherm in the GRM.…”

Section: Discussionmentioning

confidence: 94%

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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“…As the solubility was correlated with temperature and CO 2 density [6][7][8], the apparent solubility of vegetable oils can be predicted according to these correlations. The fact that plant matrix does not affect the initial extraction rate of oils from seeds is connected with high content of oils in seeds, which is measured in tens of percent.…”

Section: Combined Equilibrium Relationshipmentioning

confidence: 99%

Apparent Solubility of Natural Products Extracted with Near-Critical Carbon Dioxide

Sovová¹

2012

AJAC

Self Cite

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The apparent solubility controls the initial stage of supercritical fluid extraction of natural products, which is most important for the process economics. Based on the literature, data on CO 2 apparent solubility of volatile substances from different matrices as leaves, flowers, rhizomes and seeds were collected and compared with their thermodynamic solubility. The adsorption isotherm derived by del Valle and Urrego as a modification of the isotherm proposed by Perrut et al. is universal enough to interpret these data as well as the apparent solubility of vegetable oils from seeds, for which it was originally proposed. When the apparent solubility of minor extract components in CO 2 is compared with their thermodynamic solubility, their fraction in the extracted mixture should be taken into account.

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Solubility of two vegetable oils in supercritical CO2

Cited by 118 publications

References 32 publications

Fatty acid composition of commercial vegetable oils from the French market analysed using a long highly polar column

Fatty acid composition of commercial vegetable oils from the French market analysed using a long highly polar column

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

Apparent Solubility of Natural Products Extracted with Near-Critical Carbon Dioxide

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