## 3 Results
### Powders--Morphology, Particle Size Distribution and other Physicochemical Properties
In contrast, powders composed of maltodextrin and WPC obtained by the same technique had the highest surface oil content: 11.48% (LMW) and 10.95% (EMW). In other variants of powders, surface oil ranged from 6.78% (EMG) to 8.78% (LMG). [PERSON] et al. [47] also obtained the lowest surface oil values for powders containing gum arabic. Figure 4: Scanning electron microscope images of powders prepared by spry- (SD) and freeze-drying (FD) (SD 400\(\times\), FD 50\(\times\)). LMW, LMG, EMW, EMG—powder variants obtained from emulsions, which compositions are presented in Table 1. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Fowler** & **LMW** & \multicolumn{2}{c}{**LMG**} & \multicolumn{2}{c}{**EMW**} & \multicolumn{2}{c}{**EMG**} \\ \hline
**Method** & **SD** & **FD** & **SD** & **FD** & **SD** & **FD** & **SD** & **FD** \\ \hline MC (\(\%\)) & \(2.51\pm 0.01\) \({}^{\mathrm{t}}\) & \(1.57\pm 0.08\) \({}^{\mathrm{b}}\) & \(2.84\pm 0.46\) \({}^{\mathrm{t}}\) & \(1.99\pm 0.07\) \({}^{\mathrm{c}}\) & \(2.09\pm 0.01\) \({}^{\mathrm{t}}\) & \(1.25\pm 0.39\) \({}^{\mathrm{t}}\) & \(2.24\pm 0.04\) \({}^{\mathrm{e}}\) & \(1.23\pm 0.30\) \({}^{\mathrm{e}}\) \\ D\({}_{32}\) (sum) & \(24.20\pm 0.44\) \({}^{\mathrm{b}}\) & n.d. & \(22.62\pm 0.14\) \({}^{\mathrm{t}}\) & n.d. & \(23.17\pm 1.66\) \({}^{\mathrm{e}}\) & n.d. & \(23.35\pm 0.35\) \({}^{\mathrm{t}}\) & n.d. \\ D\({}_{43}\) (sum) & \(34.46\pm 5.30\) \({}^{\mathrm{b}}\) & n.d. & \(37.35\pm 0.87\) \({}^{\mathrm{b}}\) & n.d. & \(28.33\pm 0.04\) \({}^{\mathrm{t}}\) & n.d. & \(47.35\pm 7.88\) \({}^{\mathrm{c}}\) & n.d. \\ Span (\({}^{\mathrm{t}}\)) & \(1.57\pm 0.23\) \({}^{\mathrm{b}}\) & n.d. & \(1.90\pm 0.08\) \({}^{\mathrm{e}}\) & n.d. & \(1.34\pm 0.00\) \({}^{\mathrm{e}}\) & n.d. & \(1.99\pm 0.16\) \({}^{\mathrm{e}}\) & n.d. \\ SSA (m\({}^{2}\)/g) & \(0.25\pm 0.01\) \({}^{\mathrm{t}}\) & n.d. & \(0.27\pm 0.00\) \({}^{\mathrm{t}}\) & n.d. & \(0.25\pm 0.00\) \({}^{\mathrm{t}}\) & n.d. & \(0.26\pm 0.00\) \({}^{\mathrm{t}}\) & n.d. \\ SOC (\(\%\)) & \(8.44\pm 1.66\)\({}^{\mathrm{a}}\) & \(11.48\pm 1.32\) \({}^{\mathrm{t}}\) & \(8.78\pm 0.47\) \({}^{\mathrm{a}}\) & \(4.42\pm 0.10\) \({}^{\mathrm{a}}\) & \(7.67\pm 0.05\) \({}^{\mathrm{a}}\) & \(10.95\pm 0.01\) \({}^{\mathrm{t}}\) & \(6.78\pm 0.40\) \({}^{\mathrm{t}}\) & \(5.52\pm 0.12\) \({}^{\mathrm{b}}\) \\ EE (\(\%\)) & \(78.9\pm 1.23\) \({}^{\mathrm{b}}\) & \(71.31\pm 1.7\) \({}^{\mathrm{a}}\) & \(78.06\pm 0.54\) \({}^{\mathrm{b}}\) & \(88.94\pm 0.34\) \({}^{\mathrm{t}}\) & \(80.83\pm 0.02\) \({}^{\mathrm{t}}\) & \(72.63\pm 0.02\) \({}^{\mathrm{a}}\) & \(83.06\pm 0.01\) \({}^{\mathrm{t}}\) & \(86.2\pm 0.16\) \({}^{\mathrm{e}}\) \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Physicochemical properties of powders prepared by spry- (SD) and freeze-drying (FD). The surface oil content determines encapsulation efficiency (the lower the surface oil content, the higher the encapsulation efficiency). In the current study, the opposite values were found for LMG (88.94%) and LMW (71.31%) samples, both dried by the FD technique. In the case of powders obtained by the SD technique, the encapsulation efficiency was in a narrower range, from 78.06% (LMG) to 83.06% (EMG). In a study conducted by [PERSON] et al. [48], the encapsulation efficiency of linseed oil varied from 62.3 to 95.7%, with the lowest value obtained for powders with maltodextrin and WPC. In turn, [PERSON] et al. [49] confirmed the high ability of the gum arabic and maltodextrin mixture for the encapsulation efficiency of fish oil (83.4%) and flaxseed oil (84.5%). This confirms that the encapsulation efficiency depends on the ingredients used as coating materials. [PERSON] et al. [48] reported that the differences in encapsulation efficiency are related to the differences between the polymer matrices, which have different retention properties and film-forming capabilities. WPC has worse coating properties compared to gum arabic [50].