Content of the oxidation products is very important parameter of oil quality and oxidative
stability, ie. shelf life. In order to improve shelf life of oils, the breeders create new
sunflower hybrids with altered fatty acid composition as well as the content of minor
components that contribute to oxidative stability of oil (tocopherols, sterols, phenolic
compounds, etc.).
In order to examine the oxidative stability of the oil, sunflower seed oils of the same
latest hybrids of the secondary filial (F2) generation grown on the territory of the
Republic of Serbia and Argentina were analized. Samples were tempered at 63 + 2 °C
for a period of 8 days. The content of primary and secondary oxidation products was
monitored through the peroxide (PV) and anisidine values(p-AnV, as well as the content
of conjugated dienes (CD) and trienes (CT). After the 4" and 8" day, the samples were
taken and analysed and compared with the initial samples.
Based on the content of the resulting oxidation products the best oxidative stability
showed the oil seeds NS Horizont grown on the territory of Serbia. In this sample values
of the tested parameters of oxidative stability in the initial sample were PVinitial = 1.99 +
0.06 mmol/kg, p-AnVinitiar = 0.08 + 0.01 and after 8 days of testing: PVéin day = 30.32 +
0.03 mmol/kg, p-AnVsth day = 2.05 + 0.01. The same sample grown in Argentina showed
significantly poorer results: PVinitial = 2.00 + 0.07 mmol/kg, p-AnVinitial = 1.13 + 0.00 and
PVath day = 73.45 + 4.31 mmol/kg, p-AnVath day = 3.14 + 0.01