The compositional characterisation of Romanian grape seed oils using spectroscopic methods

Hanganu, Anamaria; Todasca, Maria-Cristina; Chira, Nicoleta-Aurelia; Maganu, Maria; Rosca, Sorin

doi:10.1016/j.foodchem.2012.04.048

Cited by 45 publications

(33 citation statements)

References 11 publications

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“…Fatty acid composition of grape seed oil is also similar to that of classic sunflower oil, where linoleic and oleic acids are the main components (Ovcharova et al, ). Grape seeds are mainly valued for the nutritional properties of the oils, which is rich in unsaturated fatty acids (oleic and linoleic) and phenolic compounds (Bail et al, ; Hanganu, Todasca, Chira, Maganu, & Rosca, ).…”

Section: Resultsmentioning

confidence: 99%

The investigation of bioactive compounds of wine, grape juice and boiled grape juice wastes

Gülcü

Uslu

Özcan

et al. 2018

J Food Process Preserv

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In this study, bioactive compounds, oil, sugar, fatty acid, and mineral contents of grape wastes (pomace, skin, and seeds) obtained from wine, grape juice, and boilled grape juice production were investigated. Total phenol and tannin contents of grape by‐products varied between 31.2 mgGAE/g (molasses skin) and 98.97 mgGAE/g (wine seed); 96.93 mgTAE/g (grape juice pomace) and 138.67 mgTAE/g (molasses pomace), respectively. The highest (377.57 g/kg) and lowest (20.00 g/kg) total sugars were determined in molasses and wine skin wastes, respectively. Epicatechin contents of samples were found between 439.67 mg/kg (molasses skin) and 3,444.57 mg/kg (molasses seed). The lowest and highest linoleic acids were determined in molasses skin oil (40.00%) and grape juice skin oil (51.10%). α‐Tocopherol contents of wine by‐product oils changed between 3.35 mg/kg (seed) and 6.42 mg/kg (pomace). The lowest and highest P contents were determined in molasses skin (17,563 mg/kg) and wine seed (29,634 mg/kg), respectively. Practical applications The residue may represent from 13.5 to 14.5% at the total volume of grapes, and may reach 20%. The most abundant phenolic compound in wine pomace is anthocyanins concentrated in the skin, and flavonols present mostly in the grape seed (56–65% total flavonol). Grape is a phenol‐rich plant, and these phenolics are mainly distributed in the skin, stem, leaf, and seed of grape, rather than their juicy middle sections. Skins and seeds of grapes are produced in large quantities by the winemaking industry. These by‐products have become valuable raw materials due to their high content of polyphenols, tocols, and other macro‐ and micronutrients. Seed and skins of grape produced in large quantities by the wine making industry have become valuable raw materials for extraction of polyphenols.

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Section: Resultsmentioning

confidence: 99%

The investigation of bioactive compounds of wine, grape juice and boiled grape juice wastes

Gülcü

Uslu

Özcan

et al. 2018

J Food Process Preserv

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“…The most evident peaks are found at 0.8 and 1.2 ppm and are attributable to CH 2 CH 2 CH 3 and (CH 2 ) n groups, respectively, from aliphatic acids. Peaks around 1.9 and 4.0 ppm are assigned to unsaturated fatty acids ( CH 2 CH CH ) and triglycerides ( CH 2 OCOR) and the peak around 5.3 ppm corresponds to CH CH protons from unsaturated fatty acids [46,47]. After pyrolysis treatment, PNS400-120, GS500-10 and OW500-10 show a broad band between 0 and 8 ppm, implying dispersion of the protons on chemical environments, with a tendency to the shielded region, suggesting the presence of some aliphatic protons.…”

Section: Materials Characterizationmentioning

confidence: 99%

Application of pyrolysed agricultural biowastes as adsorbents for fish anaesthetic (MS-222) removal from water

Ferreira

Calisto

Santos

et al. 2015

Journal of Analytical and Applied Pyrolysis

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“…Structural information was obtained using a set of chemometric equations described in the literature that use the integrals values and signal intensities from the 1 H NMR spectrum of CO. The results are in good agreement with GC–MS data: tri‐unsaturated (linolenic acid: 31%), di‐unsaturated (linoleic acid: 21%), mono‐unsaturated (39%), and saturated (9%) fatty acids.…”

Section: Resultsmentioning

confidence: 99%

Hybrid nanocomposites based on POSS and networks of methacrylated camelina oil and various PEG derivatives

Bãlãnucã

Lungu

Hanganu

et al. 2014

Euro J Lipid Sci & Tech

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Several photo-curable hybrid systems based on methacrylate-modified camelina oil (CO) were synthesized through a copolymerization reaction with hydrophilic dimethacrylated poly(ethylene glycol) macromonomers (PEG MW ¼ 300, 550, and 750 g/mol). In a first step, the epoxidation and subsequently the methacrylation reactions of CO were performed and monitorized using 1 H NMR and FTIR. Further, the polymerization reaction of the new synthesized oil-based monomer under visible light was proved by FTIR. The chain length of methacrylate functionalized PEG was found to directly influence some key properties of the oil-based networks. The curing performance of the systems was studied by GF measurements. Water uptake capacity tests and contact angle measurements were undertaken and it was found that the internal arrangement of components is strongly affecting the hydrophilicity of the materials. Furthermore, nanostructured polyhedral oligomeric silsesquioxane (POSS) compounds bearing one or eight methacrylated groups were selected in order to obtain innovative organic-inorganic nanocomposites. Mechanical and thermal properties were evaluated by compression tests, DMA, TGA, and also the morphology of the synthesized materials was investigated by SEM.Practical applications: Tailoring the copolymer composition and the reinforcing agent in the manufacturing process leads to a wide range of products with optimum properties suitable for use in a variety of industrial areas. Well-defined oil-derived systems with controllable compressive strength were prepared in this work covering the whole range, from a hard material (with short chain PEG) to a soft and flexible one (with long chain PEG).

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The compositional characterisation of Romanian grape seed oils using spectroscopic methods

Cited by 45 publications

References 11 publications

The investigation of bioactive compounds of wine, grape juice and boiled grape juice wastes

The investigation of bioactive compounds of wine, grape juice and boiled grape juice wastes

Application of pyrolysed agricultural biowastes as adsorbents for fish anaesthetic (MS-222) removal from water

Hybrid nanocomposites based on POSS and networks of methacrylated camelina oil and various PEG derivatives

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