Recovery of grape seed oil by liquid and supercritical carbon dioxide extraction: a comparison with conventional solvent extraction

Gómez, Alexander; López, C. Pereyra; Ossa, Enrique Martínez de la

doi:10.1016/0923-0467(95)03040-9

Cited by 88 publications

(59 citation statements)

References 5 publications

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“…This material undergoes conventional alcoholic extraction with EtOH-H 2 O (50:50 v/v), followed by supercritical carbon dioxide extraction of the solidifi ed hydroalcoholic extract. Studies of the pressure showed increasing yields by increasing pressure at constant temperature, in accordance with previous studies on pure Vitis vinifera (MOLERO GÓMEZ et al, 1996;CAO & ITO, 2003;FIORI et al, 2010;PASSOS et al, 2010). Experiments with increasing concentration of ethanol in the supercritical fl uid at constant temperature, pressure, and solvent-feed ratio also resulted in increasing extraction yields.…”

Section: Discussionsupporting

confidence: 76%

“…Supercritical fl uid extraction (SFE) is an environmentally friendly alternative, mainly because organic solvent clean products can be obtained, and their natural properties are preserved due to the moderate temperatures used (MOLERO GÓMEZ et al, 1996). The most widely used supercritical solvent for separation of natural products is carbon dioxide, typically in the ranges of 10-50 MPa pressures and 35-80 °C temperatures.…”

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confidence: 99%

“…The investigation of new natural antioxidants, especially those of plant origin, has become essential due to the restrictions for synthetic antioxidants in food industry, such as butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT), suspected to be carcinogenic (MOLERO GÓMEZ et al, 1996). On the other hand, pro-oxidant agents are promising in supplementary treatment of cancer patients (VALKO et al, 2007).…”

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confidence: 99%

“…The extraction yield of grape seeds (Vitis vinifera) with supercritical CO 2 leads to lower extraction yields than n-hexane, but the quality of the SFE extract is higher. The reason is that CO 2 is selective to triglycerides, while n-hexane extracts fatty acids, phospholipids, pigments, and other unsaponifi able substances together with the triglycerides (MOLERO GÓMEZ et al, 1996;CAO & ITO, 2003).…”

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confidence: 99%

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Fractionation of biologically active components of grape seed (Vitis vinifera) by supercritical fluid extraction

Calvo¹,

Morante²,

Plánder³

et al. 2017

Acta Alimentaria

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Supercritical fl uid extraction (SFE) was used for fractionation of grape seed to be applied in natural products of the food, cosmetic, or pharmaceutical industry. A two-step process was developed, consisting of conventional alcoholic extraction followed by SFE with carbon dioxide. The effects of pressure and concentration of co-solvent (ethanol) at constant temperature and solvent to feed-ratio were evaluated. The antioxidant activity of extracts and raffi nates was measured with the DPPH* free radical scavenging assay. It was observed that supercritical carbon dioxide can be used in the described process for fractionation of an alcoholic grape seed extract to obtain a product with noticeably high antioxidant activity and a second one with no antioxidant activity or pro-oxidant activity.Keywords: supercritical fl uid extraction, grape seed, Vitis vinifera, proanthocyanidins, antioxidants, DPPH Nowadays, scientists aim to obtain value-added products from waste materials. The investigation of new natural antioxidants, especially those of plant origin, has become essential due to the restrictions for synthetic antioxidants in food industry, such as butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT), suspected to be carcinogenic (MOLERO GÓMEZ et al., 1996). On the other hand, pro-oxidant agents are promising in supplementary treatment of cancer patients (VALKO et al., 2007). Grapes (Vitis vinifera) are one of largest fruit crops in the world (JAYAPRAKASHA et al., 2003), and grape extracts are reported to have several positive effects on human health, including antioxidant, anti-infl ammatory, antimicrobial, anticarcinogenic, or cardiovascular activity, among others (NAKAMURA et al., 2003). Therefore, there is a growing interest in exploiting the potential of this plant product in the food, pharmaceutical, and cosmetic industry (JAYAPRAKASHA et al., 2003).Grape seeds are a by-product from the wine and juice industry, which is disposed of by the majority of wineries. Nevertheless, they are rich in phenolic compounds, which present positive benefi ts on the human health, such as antimutagenic and antiviral activity or inhibition of the oxidation of low-density lipoproteins (LDL) in vitro (FRANKEL et al., 1995). Polyphenols, and mainly proanthocyanidins, present the most important group of bioactive * To whom correspondence should be addressed. Phone: +36 1 4632202; e-mail: sz-edit@mail.bme.huThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium for non-commercial purposes, provided the original author and source are credited.

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Section: Discussionsupporting

confidence: 76%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Fractionation of biologically active components of grape seed (Vitis vinifera) by supercritical fluid extraction

Calvo¹,

Morante²,

Plánder³

et al. 2017

Acta Alimentaria

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“…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. Jokić et al [32] determined that the optimal conditions for obtaining the highest oil yield (14.49%) and antioxidant activity using supercritical CO 2 as extracting agent were 400 bar and 41°C.…”

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

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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.

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Supercritical Fluid Extraction of Bioactive Compounds from Fruits and Vegetables

Singh

Dhanani

Kumar

2017

Fruit and Vegetable Phytochemicals

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Recovery of grape seed oil by liquid and supercritical carbon dioxide extraction: a comparison with conventional solvent extraction

Cited by 88 publications

References 5 publications

Fractionation of biologically active components of grape seed (Vitis vinifera) by supercritical fluid extraction

Fractionation of biologically active components of grape seed (Vitis vinifera) by supercritical fluid extraction

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

Supercritical Fluid Extraction of Bioactive Compounds from Fruits and Vegetables

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