Extraction and Characterization of Grape Seed Oil Compounds

Grape seed oil, a by-product of vinification, is increasingly valued for its rich profile of lipophilic and phenolic constituents. Traditional extraction methods such as cold pressing and solvent-based Soxhlet or maceration have been supplemented by advanced techniques—supercritical CO₂, ultrasound-assisted and microwave-assisted extractions—that enhance yield and preserve thermo-sensitive bioactives. The resulting oil is characterised by gas and liquid chromatography coupled to mass spectrometry, Fourier-transform infrared spectroscopy, high-performance liquid chromatography and chemometric data analysis. These approaches enable precise quantification of fatty acids (notably linoleic, oleic and palmitic acids), tocopherols, phytosterols and proanthocyanidin oligomers. Characterisation studies reveal that extraction parameters critically influence antioxidant and anti-inflammatory potency, with modern methods yielding oils enriched in polyunsaturates and lipophilic antioxidants. Valorisation of grape seed oil spans functional foods, nutraceuticals and cosmeceuticals, contributing to circular-economy agendas by transforming winery residues into high-value products.

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Extraction and Characterization of Grape Seed Oil Compounds publication trend

The graph below shows the total number of articles in extraction and characterization of grape seed oil compounds across all publications each year (not limited to Nature Index journals).

Technical terms

Supercritical fluid extraction: Use of CO₂ above its critical temperature and pressure to solubilise and recover oil without organic solvents.

Ultrasound-assisted extraction (UAE): Application of acoustic cavitation to enhance mass transfer and accelerate compound release from plant matrices.

Gas chromatography–mass spectrometry (GC-MS): Analytical technique separating volatile components for identification and quantification via mass fragmentation patterns.

Proanthocyanidins: Oligomeric flavonoids found in grape seeds, notable for strong antioxidant activity and free-radical scavenging.

Tocopherols: Lipid-soluble forms of vitamin E, acting as chain-breaking antioxidants within oil matrices.

References

1. Advances in Grape Seed Oil Extraction Techniques and Their Applications in Food Products: A Comprehensive Review and Bibliometric Analysis. Foods (2024).
2. Exploring Phytochemical Composition and In Vivo Anti-Inflammatory Potential of Grape Seed Oil from an Alternative Source after Traditional Fermentation Processes: Implications for Phytotherapy. Plants (2023).
3. Bio-Based Compounds from Grape Seeds: A Biorefinery Approach. Molecules (2018).
4. Grape (Vitis vinifera L.) Seed Oil: A Functional Food from the Winemaking Industry. Foods (2020).
5. Grape Seeds: Chromatographic Profile of Fatty Acids and Phenolic Compounds and Qualitative Analysis by FTIR-ATR Spectroscopy. Foods (2019).
6. Innovative and Conventional Valorizations of Grape Seeds from Winery By-Products as Sustainable Source of Lipophilic Antioxidants. Antioxidants (2020).
7. Supercritical Extraction from Vinification Residues: Fatty Acids, α‐Tocopherol, and Phenolic Compounds in the Oil Seeds from Different Varieties of Grape. The Scientific World JOURNAL (2012).