Supercritical fluid extraction of grape seed oil and subsequent separation of free fatty acids by high-speed counter-current chromatography

Cao, Xueli; Ito, Yoichiro

doi:10.1016/j.chroma.2003.09.001

Cited by 149 publications

(109 citation statements)

References 6 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%

“…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. Other authors reported not relevant differences in fatty acid composition of extracts from solvent extraction (n-hexane) and SFE (CAO & ITO, 2003), or those obtained by SFE of grape seeds with sequential fractionation (FIORI et al, 2010). DPPH free radical scavenging assay revealed opposing antioxidant activity of the two fractions obtained in the presented two-step extraction process (Soxhlet extraction followed by SFE).…”

Section: Discussionmentioning

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%

Section: Discussionmentioning

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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“…6,7 Grape (Vitis vinifera) seed oil presents high level of linoleic acid, higher than sunflower and soy oils, which is considered as the main characteristic for commercial interest. 8,9 Castor (Ricinus communis) oil differs from the other vegetable oils because of its high amount of hydroxylated UFA, named ricinoleic acid (C 18 H 34 O 3 ). The hydroxyl group provides high viscosity and chemical stability for this compound.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Lipid Profiles of Oils from Kernels of Peanut, Babassu, Coconut, Castor and Grape by GC-FID and Raman Spectroscopy

Martini¹,

Porto²,

Oliveira³

et al. 2017

J. Braz. Chem. Soc.

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The characterization of the lipid profiles of oils extracted from the kernel of seeds and nuts of peanut (Arachis hypogaea), babassu (Attalea speciosa), coconut (Cocos nucifera), castor (Ricinus communis) and grape (Vitis vinifera) was performed by using Raman spectroscopy and gas chromatography with flame ionization detector (GC-FID). Chromatographic analyses showed that coconut and babassu oils are composed essentially by saturated fatty acids (SFA), whereas the others are composed mainly by unsaturated fatty acids (UFA). The comparison of commercial and homemade castor oils showed the former have a lower level of ricinoleic acid at ca. 58%. Spectroscopic analyses of three distinct castor oils showed their profiles could be differentiated by marker features ascribed to carbonyl modes which were correlated with storage time. The comparison between the Raman spectra of standard samples of fatty acids with the samples of oils allowed the assignment of the spectroscopic features and the characterization of marker bands for the degree of unsaturation.

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“…Some of these extraction methods, however, required a longer extraction time (Chew, 2009). Nowadays, many researchers (Papamichail et al, 2000;King et al, 2001;Cao and Ito 2003;Machmudah et al, 2008) turns to supercritical extraction techniques which is relatively rapid because of the low viscosities and high diffusivities associated with supercritical fluids. Transesterification is the general term used to describe the important class of organic reactions where an ester is transformed into another ester through interchange of the alkoxy moiety.…”

Section: Introductionmentioning

confidence: 99%

Production of Biodiesel via In-Situ Supercritical Methanol Transesterification

Ani¹,

Ishak²,

Ismail³

2011

Biodiesel - Feedstocks and Processing Technologies

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Supercritical fluid extraction of grape seed oil and subsequent separation of free fatty acids by high-speed counter-current chromatography

Cited by 149 publications

References 6 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

Comparative Study of the Lipid Profiles of Oils from Kernels of Peanut, Babassu, Coconut, Castor and Grape by GC-FID and Raman Spectroscopy

Production of Biodiesel via In-Situ Supercritical Methanol Transesterification

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