Physical and chemical composition of fresh strawberry seeds and seed oils

Within the scope of this study, in order to determine physical and chemical characteristics of seed and seed oil of Albion and Festival strains; dry substances, ash samples, foreign matter, a thousand kernel weight, dimension, fat rate, free acidity, peroxide number, iodine value, colour, amount of mineral matter, saponification and amount of unsaponifiable matter, sterol and composition of fatty acids, tocopherol and total amount of phenol were analysed. Subsequently, values of a thousand kernel weight, dry substance, foreign matter, ash sample and fat rate of Albion and Festival strawberry seeds were identified respectively as 0,66 – 0,67 gr, %92,51 – 94,29, %7,4 – 5, %3,26 – 2,54, %9,20 – 14,84. Furthermore, free acidity, peroxide number, iodine value, saponification and amount of unsaponifiable matter, tocopherol and total amount of phenol of Albion and Festival strawberry seed were identified respectively as 0,87 – 1,08 KOHgr/kg, 15,2 – 17,6 meqO2/kg, 157,22 – 189,69, 123,79 – 169,95 mgKOH/gr, %0,27 – 1,09, 48,42 – 50,02 mg/100g, 1,54 – 1,37 mg/100g. When compositions of fatty acid of Albion and Festival strawberry seeds were analysed, oleic acid, linoleic acid and linolenic acid were defined as dominant fatty acid. With the regard of sterol composition, cholesterol, campesterol, stigmasterol, Σ-beta sitosterol, ∆7- avenasterol, of which Σ-beta sitosterol had the highest ratio, were identified. Regarding mineral matter, Na, Mg, Al, Si, P, K, Ca, Cr, Mn, Ni, Cu, Zn, Se, Sr, Pd, Ba and Pt were found in Albion and Festival strawberry seed oil. Conclusively, Albion and Festival strawberry seed oil is recommended to be used externally, furthermore it is also permissible for human consumption after reducing the free fatty acid and peroxide number of Albion and Festival strawberry seed oil. The optained oil from the seed was processable from a vegetable oil technological point of view and with the content of the composition of the fatty acid, it was determined that it had nourishing features in respect of sterol composition and mineral matter.