Rate of the vegetable oil extraction with supercritical CO2—II. Extraction of grape oil

Sovová, Helena; Kučera, Jaroslav; Jez, Jaromír

doi:10.1016/0009-2509(94)87013-6

Cited by 205 publications

(90 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Smaller amounts of seeds can be extracted in semi-batch mode, with the supercritical luid lowing through a ixed bed of material [30]. Molero Gómez et al [31] compared the supercritical extraction and the non-supercritical one using CO 2 as extraction agent, showing a great increment on oil yield by working at supercritical conditions.…”

Section: Faty Acidmentioning

confidence: 99%

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

Haro¹,

Rodrı́guez²,

Carmona³

et al. 2018

Grapes and Wines - Advances in Production, Processing, Analysis and Valorization

View full text Add to dashboard Cite

Grape processing produces a substantial amount of residues that are highly polluting and expensive to treat, being grape seed one of the main by-products with high commercial interest. During the extraction process of grape seed oil, most of the nutraceutical compounds remain on the solid cake. This book chapter resumes the potential utilization of grape seed oil for producing biobased materials through environmentally friendly processes that could substitute petroleum-derived products. Special atention is given to transesteriication and epoxidation processes. The transesteriication of grape seed oil in presence of methanol drives to the production of a biodiesel with excellent low-temperature properties. According to EN 14214, grape seed oil-based biodiesel presents a slightly lower cetane number than the speciied limit. In addition, this biodiesel presents a low oxidation stability which can be improved by the incorporation of oxidation stabilizer. Atending to the epoxidation of grape seed oil, short reaction times and high temperatures are advised. Epoxidized grape seed oil can be used for the synthesis of biobased polyols and its further application on the synthesis of polyurethane compounds.

show abstract

Section: Faty Acidmentioning

confidence: 99%

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

Haro¹,

Rodrı́guez²,

Carmona³

et al. 2018

Grapes and Wines - Advances in Production, Processing, Analysis and Valorization

View full text Add to dashboard Cite

show abstract

“…The apparent and thermodynamic solubilities are usually identical for vegetable oils extracted from seeds [2]. The apparent solubility of volatile substances, however, is often much lower than their thermodynamic solubility in CO 2 .…”

Section: Introductionmentioning

confidence: 98%

“…All other plants contained less than 5% extract. 2 The apparent solubility of volatile substances extracted from seeds should be considered separately because they are distributed between the vapor phase and oil in the seeds, which is insoluble at lower pressures and is coextracted at higher pressures. The apparent solubility of volatile substances from seeds at 40˚C and 8 -12 MPa was shown to be directly proportional to the volatile oilto-fatty oil ratio in the seed and to increase with increaseing pressure [28].…”

Section: Washing Out Of Free Solutementioning

confidence: 99%

“…Both extraction conditions (extraction temperature, pressure, solvent flow rate and time of extraction) and pretreatment of extracted plant should be optimized to minimize the production cost. The fluid leaving the extractor under optimum conditions is usually a saturated solution of extract in supercritical CO 2 , or almost saturated solution [1]. Thus, the concentration of saturated solution in equilibrium with extracted plant, called apparent solubility, is an important quantity controlling the extraction kinetics and affecting the production cost.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Sovová¹

2012

AJAC

View full text Add to dashboard Cite

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.

show abstract

“…Grape seed matrix is very complex, containing approximately 40% fiber, 16% oil, 11% proteins and 7% complex phenols, tannins, sugars, mineral salts and other components (Murga et al, 2000). Some research has been published on supercritical extraction of oil from grape seeds (Murga et al, 2000;Sovová et al 1994;Molero et al, 1996) but, according to Reverchon (1997) papers describing the extraction with supercritical fluids of vegetable matter are focused mainly on the analytical aspects. Therefore, knowledge about the chemical composition of many matrices, including Isabella grape bagasses, is very scarce.…”

Section: Introductionmentioning

confidence: 99%

Preliminary study of the influence of CO2 extraction conditions on the ester, aldehyde, ketone and hydrocarbon content of grape bagasses from jam production

Santos¹,

Dariva²,

Mossi³

et al. 2007

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-The main objective of this work was to assess the influence of temperature and pressure on the chemical characteristics of the essential oil obtained from CO 2 extraction of grape bagasses in the production of jam. The experiments were performed in a laboratory-scale unit, where the effect of temperature (290 and 303 K) and pressure (15 and 25 Mpa) was investigated in terms of liquid yield and chemical composition of the extracts. The CO 2 mass flow rate was kept within a range of 2.5 to 3.0 g/min. The instrumental analysis was performed by gas chromatography with a mass spectrometer detector (GC-MS). The extraction conditions investigated in this work had no significant influence on the mass of essencial oil extracted. The main compounds identified in the extracts by the GC-MS spectra library (match quality higher tan 90%) were octadecane, dihydroxy ergostene-dione and phenylethyl n-decanoate when the temperature was increased from 290 to 303 K. Heptanal, ethyl ester of decosonoic acid and hexatriacontane were the individual compounds with the greatest increase in the chromatographic peak area when the pressure was increased from 15 to 25 Mpa. The most important class of compounds were hydrocarbons at 303 K and 15 MPa and were ketones and aldehydes at 25 Mpa and 290 K.

show abstract

Rate of the vegetable oil extraction with supercritical CO2—II. Extraction of grape oil

Cited by 205 publications

References 8 publications

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

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

Preliminary study of the influence of CO2 extraction conditions on the ester, aldehyde, ketone and hydrocarbon content of grape bagasses from jam production

Contact Info

Product

Resources

About