Comparative research of grape seeds lipidic complex isolated by mechanical expression and extraction
The results of researches of grape seeds lipidic complex of the different varieties of grapes which are grown up in Krasnodar region: Byanko, Riesling, Sauvignon, Muscat are presented. Extraction of a lipidic complex was carried out by an mechanical expression method, extraction by lightly volatile organic solvent and liquid carbon dioxide.The obtained results showed that the composition of the lipidic complex depends on the method of oil production and on the grape variety. The oils produced in the press way, extraction by ethyl oxide and CO2-extract were analysed by method of a thin layer chromatography. It is established that the fatty acid composition of the extracted triglycerides depends only on grapes variety. The content of linoleic acid is influenced only by grapes variety. The fatty acids prevailing in composition are stearic and palmitic from saturated, linoleic and oleinic from nonsaturated. Irrespective of a grapes variety in oil of grape seeds the maximum contents is the linoleic acid. The oils of grape seeds produced in the different ways can be considered as independent products. Press oil can be applied to food without additional refining, and extraction it is necessary to refine. CO2-extract can be recommended for use in the cosmetic industry.Keywords: grape seeds oil, fatty acid composition of oil, lipidic complex, extraction.