## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c} \hline \multirow{2}{*}{**Oil Variety**} & \multicolumn{8}{c}{**AE**} \\ \cline{2-13}  & **BE1** & **BE1** & **BE2** & **BE2** & **BE3** & **BE3** & **BE4** & **BE4** & **BE5** & **BE5** & **BE6** & **BE6** & **BE7** & **BE7** \\  & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** & **(2.5\%)** & **(5.0\%)** \\ \hline Finola CP & 136.88 & 205.64 & 109.92 & 178.78 & 217.17 & 213.33 & 167.34 & 242.79 & 96.88 & 234.72 & 60.22 & 210.74 & 95.02 & 249.59 \\ Finola HP & 158.85 & 257.83 & 117.36 & 227.21 & 182.15 & 301.52 & 163.02 & 308.18 & 77.21 & 211.56 & 71.93 & 218.66 & 79.79 & 280.72 \\ Earlina 8 FC CP & 200.84 & 257.45 & 163.34 & 175.99 & 231.35 & 270.07 & 203.88 & 283.76 & 113.50 & 262.77 & 109.58 & 266.86 & 133.14 & 305.90 \\ Earlina RFC HP & 241.30 & 270.29 & 264.60 & 234.46 & 309.93 & 294.17 & 229.34 & 303.01 & 173.52 & 311.02 & 181.52 & 334.84 & 177.44 & 353.02 \\ Secueni Jubileu CP & 136.52 & 268.36 & 70.92 & 178.21 & 199.65 & 338.71 & 132.84 & 333.92 & 84.68 & 266.79 & 64.51 & 223.81 & 70.35 & 298.42 \\ Secueni Jubileu HP & 121.19 & 213.93 & 80.91 & 182.10 & 174.34 & 298.90 & 76.41 & 302.02 & 62.22 & 223.68 & 53.42 & 165.31 & 52.45 & 220.92 \\ \hline \end{tabular}
\end{table} 
Table 4: Total color change (\(\Delta\)E) in hemp oils [%]. Figure 1: (**a**) The effective influence of bleaching earths on color change using the CIE-Lab method. (**b**) Distribution of the effective color change efficiency of bleaching earth using the CIE-Lab method. According to the work of [PERSON] et al. [43] and [PERSON] et al. [44] the initial content of natural dyes depends mainly on the hemp variety and pressing temperature. Moreover, increasing the processing temperature improves the solubility of chlorophylls and carotenoids in oils, which makes their removal more difficult. BE7 had the most effective impact on the tested samples; the impacts of BE1 and BE2 were slightly lower, and BE5 and BE6 were slightly lower. The impact of BE1 and BE2 were slightly lower, and BE5 was slightly lower, and BE5 was slightly lower. Figure 2: (a) The effective power of bleaching earths on the removal of natural dyes. (b) Distribution of the efficiency of the effective removal of natural dyes by bleaching earths. BE6 also had a considerable impact (Figure 2a). The remaining BEs did not significantly impact the content of natural dyes in the tested oils. In the case of BE3, this is due to there being too large of a disproportion between the parameters of the oils obtained in the CP and HP variants, especially considering the ratio of removed chlorophylls to carotenoids. Referring to the obtained results of the work of [PERSON] et al. (2015), where it was found that the reduction in natural dyes occurs at the stage of oil filtration, it can be concluded that BE4 (2.5%) has poor adsorption properties regarding carotenoid dyes. BE1, BE6, and BE7 at doses of 5.0% were the most effective at removing natural dyes (blue field in Figure 2b). BE3, BE6, and BE7 at amounts of 2.5% (a gray area in Figure 2b), in turn, showed the worst ratio of removed chlorophylls to carotenoids. The work by [PERSON] and [PERSON] (2016) confirms the conclusions drawn in this study; the authors indicated that the weight of the BE used was a critical factor in determining the bleaching efficiency, temperature, and process duration. The inefficiency of the adsorption of natural dyes by some of the Bes used may be because these Bes gain adsorption capacity at high temperatures, as indicated by the work of [PERSON] et al. (2017). The occurrence of BE6 and BE7 in two groups is because some adsorbents show a sharp increase in adsorption efficiency after exceeding the limit dose, as indicated by [PERSON] et al. (2018). For these BEs, the dose limit should be between 3.0% and 4.0%. There is no universal model for selecting the dose of bleaching earth in the literature, and the work of [PERSON] et al.