Chromatographic Quantitation of Some Bioactive Minor Components in Oils of Wheat Germ and Grape Seeds Produced as By-Products

Repeatedly Heated Vegetable Oils and Lipid Peroxidation

“…Other than palm oil, tocotrienols are found abundantly in barley [38], rice bran [39], grape seed oil [40], rye, oat, maize and wheat germ [41]. Tocopherols on the other hand, are distributed at a wider range of food and vegetable oils such as soybean, corn, sunflower and cottonseed oils [40,42].…”

Bioactive Properties, Fatty Acid Composition and Mineral Contents of Grape Seed and Oils

“…Obviously, such utilisation would improve the utilisation of the available resources and result in the production of various products for food. On the other hand, grape seeds are used as a source of oil, as they have nutritional and bioactive constituents (Kamel et al, 1985;Göktürk Baydar & Akkurt, 2001;Hassanein & Abedel-Razek, 2009). Also, grape seeds have a high protein content (Hassanein & Abedel-Razek, 2009).…”

“…On the other hand, grape seeds are used as a source of oil, as they have nutritional and bioactive constituents (Kamel et al, 1985;Göktürk Baydar & Akkurt, 2001;Hassanein & Abedel-Razek, 2009). Also, grape seeds have a high protein content (Hassanein & Abedel-Razek, 2009). They also contain 10% to 20% oil (Schester et al, 1992;Laufenberg et al, 2003;Akın & Altındişli, 2011) with a high vitamin E content, which is important for human health (Barron et al, 1988).…”

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

“…and Abedel-Razek [26] reported a value of 380 mg/kg of total tocopherol content. These values are relatively low compared with other vegetable oils, indicating that most of vitamin E active compounds remain on the solid phase of the seed (grape seed lour).…”

“…A content of phytosterols ranged from 2580 to 11,250 mg/kg phytosterols have been reported in literature. However, independently of the author, β-sitosterol is the main phytosterol found in grape seed oil (67-70%) [25,26].…”