## 3 Results and Discussion
Although the R\({}^{2}\) values for dry matter loss in case of solid-to-liquid ratios of 1:3 and 1:1 were not high enough (0.7284 at the solid-to-liquid ratio of 1:3 and 0.7081 at the solid-to-liquid ratio of 1:1), the values of the RMSE were low enough (0.2965 g at the solid-to-liquid ratio of 1:3 and 0.1583 g at the solid-to-liquid ratio of 1:1). The values of the parameters of the Peleg model, namely the Peleg rate constant \(A_{1}\) and the Peleg capacity constant \(A_{2}\), obtained by fitting the discussed model to the experimental data are shown in Table 2 and in Figures 2 and 3. Parameter \(A_{1}\) represents the water absorption rate at the beginning of the process of rehydration, whereas parameter \(A_{2}\) informs the absorption ability of the rehydrated product and the equilibrium value of investigated variable \(X\)[41; 42; 43]. \begin{table}
\begin{tabular}{c c c c c c c} \hline
**Solid-to-** & **Statistical** & **Mass Gain** & **Dry Matter** & **Water Gain** & **Moisture Content Increase** & **Volume Increase** \\ \hline
1:20 & R\({}^{2}\) & 0.977841 & 0.990122 & 0.980034 & 0.986391 & 0.978582 \\ RMSE & 2.761468 & 0.160082 & 2.801446 & 0.494571 & 1.985095 \\ \hline
1:15 & R\({}^{2}\) & 0.976974 & 0.988429 & 0.978578 & 0.979364 & 0.983792 \\ RMSE & 1.986113 & 0.167964 & 2.180706 & 0.480982 & 1.641184 \\ \hline
1:10 & R\({}^{2}\) & 0.989993 & 0.991571 & 0.991465 & 0.993521 & 0.979681 \\ RMSE & 1.218165 & 0.127637 & 1.293332 & 0.216352 & 1.715386 \\ \hline
1:5 & R\({}^{2}\) & 0.973097 & 0.934743 & 0.978194 & 0.993253 & 0.985869 \\ RMSE & 1.728302 & 0.213659 & 1.692072 & 0.131513 & 1.157729 \\ \hline
1:3 & R\({}^{2}\) & 0.97692 & 0.72837 & 0.981604 & 0.988882 & 0.957971 \\ RMSE & 1.281404 & 0.296452 & 1.184785 & 0.109865 & 1.676851 \\ \hline
1:1 & R\({}^{2}\) & 0.993796 & 0.708077 & 0.994371 & 0.993351 & 0.950684 \\ RMSE & 0.261170 & 0.15826 & 0.366403 & 0.035141 & 0.704667 \\ \hline \end{tabular}
\end{table} 
Table 1: Statistical tests of the Peleg model applied to simulate dried red beets rehydration curves. \begin{table}
\begin{tabular}{c c c c c c c} \hline
**Solid-to-** & **Parameter** & **Mass Gain** (\({}^{1}\)) & **Dry Matter Loss** (\({}^{2}\)) & **Water Gain** (\({}^{3}\)) & **Moisture Content Increase** (\({}^{4}\)) & **Volume Increase** (\({}^{5}\)) \\ \hline
1:20 & \(A_{1}\) & 0.674 & 6.125 & 0.581 & 6.533 & 0.555 \\ \(A_{2}\) & 0.021 & 0.204 & 0.019 & 0.080 & 0.024 \\ \hline
1:15 & \(A_{1}\) & 0.607 & 4.512 & 0.509 & 5.834 & 0.634 \\ \(A_{2}\) & 0.024 & 0.205 & 0.021 & 0.089 & 0.025 \\ \hline
1:10 & \(A_{1}\) & 0.570 & 3.415 & 0.467 & 4.418 & 0.584 \\ \(A_{2}\) & 0.026 & 0.230 & 0.023 & 0.115 & 0.027 \\ \hline
1:5 & \(A_{1}\) & 0.739 & 1.917 & 0.563 & 4.558 & 0.656 \\ \(A_{2}\) & 0.030 & 0.401 & 0.028 & 0.198 & 0.034 \\ \hline
1:3 & \(A_{1}\) & 0.647 & 1.910 & 0.510 & 3.930 & 0.621 \\ \(A_{2}\) & 0.041 & 0.629 & 0.037 & 0.309 & 0.040 \\ \hline
1:1 & \(A_{1}\) & 0.309 & 1.900 & 0.198 & 1.613 & 0.478 \\ \(A_{2}\) & 0.100 & 1.235 & 0.088 & 0.833 & 0.124 \\ \hline \end{tabular}
\end{table} 
Table 2: Values of the parameters of the Peleg model applied to simulate dried red beets rehydration curves. The effect of the solid-to-liquid ratio on the Peleg rate constant \(A_{1}\) was slightly different for investigated variables, namely rehydrated cubes mass, rehydrated cubes dry matter, mass of water in rehydrated cubes, rehydrated cubes moisture content, and rehydrated  
Figure 3: Variations in inverse of parameter \(A_{2}\) with the solid-to-liquid ratio for mass gain (**a**), dry matter loss (**b**), water gain (**c**), moisture content increase (**d**), and volume increase (**e**). \(\blacklozenge\) values from Table 2, —Equation (7). Figure 2: Variations in parameter \(A_{1}\) with the solid-to-liquid ratio for mass gain (**a**), dry matter loss (**b**), water gain (**c**), moisture content increase (**d**), and volume increase (**e**). \(\blacklozenge\) values from Table 2, —Equation (5) (**a,c**–**e**), Equation (6) (**b**). cubes volume.