Therefore, the purpose of this study was to evaluate the content
of bioactive substances, selected quality parameters and oxidative
stability of two commercially available cold-pressed rose hip oils.
The fatty acids composition, the content of sterols, squalene,
tocopherols, carotenoids and, for the first time, phenolic
compounds were determined. The scavenging activity of oils and
their lipophilic and hydrophilic fractions against a stable
1,1-dipenyl-2-picrylhydrazyl (DPPH) radical was also measured.
The content of iron and copper as well as acid (AV), peroxide
(PV) and p-anisidine value (p-AV) were established. The oxidative
stability of rose hip oil was evaluated using modified isothermal
and non-isothermal DSC method. The quality and oxidative stability
of rose hip oil were compared with those of two commercially
available oils, camelina and walnut, which contain a substantial
amount of a-linolenic acid.