## 3 Results
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Tocopherols**} \\ \cline{2-6}
**Vegetable Oils** & \(\alpha\) & \(\beta\) & \(\gamma\) & \(\delta\) & **DPPH** \\ \cline{2-6}  & & **mg\(\cdot\)kg\({}^{-1}\)** & & **Total** & **mgTrolox\(\cdot\)100 g\({}^{-1}\)** \\ \hline Milk thistle & 275.70 \(\pm\) 0.40 & nd & 61.50 \(\pm\) 0.30 \({}^{\text{a}}\) & 14.23 \(\pm\) 0.15 & 351.43 \({}^{\text{a}}\) & 1.83 \(\pm\) 0.04 \\ Borage & nd & nd & 94.07 \(\pm\) 0.25 \({}^{\text{b}}\) & 14.23 \(\pm\) 0.42 & 108.3 \({}^{\text{b}}\) & 1.54 \(\pm\) 0.03 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Phytochemical compounds with antioxidant effects in oils. content of \(\alpha\)-tocopherol (vitamin E), i.e., the most bioactive of the same, was positively verified in milk thistle oil (275.7 mg\(\cdot\)kg\({}^{-1}\)) but was not present in borage oil. \(\beta\)-tocopherol was not detected in either of the samples. The content of \(\gamma\)-tocopherol was significantly higher in borage oil, exceeding the corresponding amount in the other sample by 34.62%. The lowest values were observed for \(\delta\)-tocopherols and were the same in both samples (14.23 mg\(\cdot\)kg\({}^{-1}\)). The free radical scavenging capacity of the studied oils determined using the common DPPH method was 1.83 and 1.54 mgTrolox\(\cdot\)100 g\({}^{-1}\), respectively, in milk thistle and borage oil, i.e., the discrepancy between samples amounted to 18.83%. Table 6 presents the colour parameters of the analysed oils. The value of the L* coordinate for oil obtained from milk thistle seeds was approximately ten units lower relative to borage oil, signifying that the latter was considerably lighter. The values of the a* and b* colour coordinates, as well as the chroma value (c), were all higher for milk thistle oil, signifying that the colour could be described as more \"lively\". On the other hand, the hue (h) coordinate was higher for borage oil, i.e., the hues of the respective oils were considerably different. The table below (Table 7) lists the basic steroid compounds present in plants. The content of total sterols varied between the two analysed oil samples. The level thereof recorded for borage oil (261.33 mg\(\cdot\)100 g\({}^{-1}\) oil) was 33% lower than in the case of milk thistle oil (347.52 mg\(\cdot\)100 g\({}^{-1}\) oil). The highest specific content was observed for \(\beta\)-sitosterol, \(\Delta^{5}\)-campestanol, \(\Delta^{7}\)-stigmasterol, and \(\Delta^{5}\)-stigmasterol, with the differences between the two oils estimated at 11.85%, 252%, 88.94%, and 177.30%, respectively. The lowest content or a complete absence of the relevant compounds in the milk thistle sample was recorded for clerosterol, \(\Delta^{5}\)-avenasterol, brassicasterol (0 mg\(\cdot\)100 g\({}^{-1}\) oil), and \(\Delta^{7}\)-avenasterol (0 mg\(\cdot\)100 g\({}^{-1}\) oil). In the case of borage oil, the presence of campestanol, clerosterol, sitostanol, \(\Delta^{5}\)-24-stigmastadienol, and cholesterol was not detected. The content of squalene also varied significantly between the analysed oils. It was 78.23 mg\(\cdot\)100 g\({}^{-1}\) oil in milk thistle oil, which was 97% higher than the corresponding value for borage oil (39.76 mg\(\cdot\)100 g\({}^{-1}\) oil). The conducted analysis of Pearson's linear correlation coefficient confirmed our expectations and revealed a close dependence between the factors considered for both oils (Table 8). There was a strong, both positive and negative, correlation between the content of phosphorus, C16:0 acid, acid number, peroxide value, iodine number, free fatty acids, and oxidative stability coefficient relative to the content of tocopherools \(\delta\), \(\gamma\), \(\alpha\). Moreover, the same was also observed relative to sterols, polyphenols, DPPH, flavonoids, squalene, carotenoids, and chlorophylls, i.e., the group of antioxidative compounds. Figure 1 presents the FTIR spectra measured for the respective oil samples obtained from borage (black line) and milk thistle (red line).