Valorization of winery waste is a promising solution for waste management with additional benefit of bioactive compounds isolation. The aim of this study was to analyze the nutritional and bioactive potential of oil derived from Serbian autochthonous grape seed variety Prokupac and to compare it with known international grape varieties. Additionally, two extraction methods (ultrasound assisted extraction and cold pressing) were used in order to determine their influence on physico-chemical and nutritive characteristics of grape seed oil. Different methods, including determination of physicochemical properties, content of bioactive compounds, oxidative stability and antioxidative capacity were used for the characterization of grape seed oils. Results indicated that the higher yield was obtained by ultrasound assisted extraction compared to cold pressing. The application of ultrasound assisted extraction resulted in increased α-tocopherol content and better antioxidant capacity and oxidative stability of oil. Significant differences in bioactive composition were observed for Prokupac seed oil compared to the other grape varieties. Oil extracted from Prokupac grape seed had the lowest content of polyunsaturated and the highest content of saturated fatty acids, the highest content of α-tocopherol and consequently, the best antioxidative capacity. Prokupac grape seed has a great potential for isolation of nutritive and bioactive valuable oil.

中文翻译：

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酿酒厂废物的价值化：Prokupac 葡萄籽作为营养价值油的来源

酒厂废物的增值是废物管理的一个有前途的解决方案，具有生物活性化合物分离的额外好处。本研究的目的是分析来自塞尔维亚本土葡萄籽品种 Prokupac 的油的营养和生物活性潜力，并将其与已知的国际葡萄品种进行比较。此外，使用两种提取方法（超声辅助提取和冷压）来确定它们对葡萄籽油理化和营养特性的影响。不同的方法，包括测定理化性质、生物活性化合物的含量、氧化稳定性和抗氧化能力，用于表征葡萄籽油。结果表明，与冷压相比，超声辅助提取获得了更高的产量。超声辅助提取的应用导致α-生育酚含量增加，油的抗氧化能力和氧化稳定性更好。与其他葡萄品种相比，Prokupac 种子油的生物活性成分存在显着差异。Prokupac葡萄籽油中多不饱和脂肪酸含量最低，饱和脂肪酸含量最高，α-生育酚含量最高，抗氧化能力最好。Prokupac 葡萄籽在分离具有营养和生物活性的贵重油方面具有巨大潜力。超声辅助提取的应用导致α-生育酚含量增加，油的抗氧化能力和氧化稳定性更好。与其他葡萄品种相比，Prokupac 种子油的生物活性成分存在显着差异。Prokupac葡萄籽油中多不饱和脂肪酸含量最低，饱和脂肪酸含量最高，α-生育酚含量最高，抗氧化能力最好。Prokupac 葡萄籽在分离具有营养和生物活性的贵重油方面具有巨大潜力。超声辅助提取的应用导致α-生育酚含量增加，油的抗氧化能力和氧化稳定性更好。与其他葡萄品种相比，Prokupac 种子油的生物活性成分存在显着差异。Prokupac葡萄籽油中多不饱和脂肪酸含量最低，饱和脂肪酸含量最高，α-生育酚含量最高，抗氧化能力最好。Prokupac 葡萄籽在分离具有营养和生物活性的贵重油方面具有巨大潜力。Prokupac葡萄籽油中多不饱和脂肪酸含量最低，饱和脂肪酸含量最高，α-生育酚含量最高，抗氧化能力最好。Prokupac 葡萄籽在分离具有营养和生物活性的贵重油方面具有巨大潜力。Prokupac葡萄籽油中多不饱和脂肪酸含量最低，饱和脂肪酸含量最高，α-生育酚含量最高，抗氧化能力最好。Prokupac 葡萄籽在分离具有营养和生物活性的贵重油方面具有巨大潜力。