## 3 Results and Discussion
\begin{table}
\begin{tabular}{l c c c c c} \hline \hline \multirow{2}{*}{**Temp (\({}^{\circ}\)C)**} & \multirow{2}{*}{**Time (min)**} & \multicolumn{4}{c}{**Solvents**} \\ \cline{3-6}  & & **Water** & **Methanol** & **Ethanol** & **Acetone** \\ \hline \multicolumn{6}{c}{**AA (mg/g Rose Fruit Pomace)**} \\ \hline
25 \({}^{\circ}\)C & 15 & 31.76 \(\pm\) 1.89 \({}^{\text{Bd}}\) & 26.43 \(\pm\) 1.02 \({}^{\text{Ac}}\) & 10.67 \(\pm\) 0.18 \({}^{\text{Bb}}\) & 3.01 \(\pm\) 0.11 \({}^{\text{ABa}}\) \\
25 \({}^{\circ}\)C & 30 & 33.75 \(\pm\) 0.64 \({}^{\text{Bc}}\) & 28.33 \(\pm\) 0.38 \({}^{\text{ABc}}\) & 11.39 \(\pm\) 0.75 \({}^{\text{Ab}}\) & 3.32 \(\pm\) 0.19 \({}^{\text{Ba}}\) \\
25 \({}^{\circ}\)C & 45 & 35.54 \(\pm\) 0.12 \({}^{\text{BCd}}\) & 30.54 \(\pm\) 1.15 \({}^{\text{BC}}\) & 12.26 \(\pm\) 0.24 \({}^{\text{Bb}}\) & 3.55 \(\pm\) 0.21 \({}^{\text{Ba}}\) \\
25 \({}^{\circ}\)C & 60 & 36.65 \(\pm\) 0.85 \({}^{\text{Cd}}\) & 31.65 \(\pm\) 0.68 \({}^{\text{Bc}}\) & 13.08 \(\pm\) 0.11 \({}^{\text{Bb}}\) & 4.00 \(\pm\) 0.05 \({}^{\text{Ca}}\) \\
45 \({}^{\circ}\)C & 15 & 37.80 \(\pm\) 0.33 \({}^{\text{Cd}}\) & 32.50 \(\pm\) 1.09 \({}^{\text{Bc}}\) & 13.65 \(\pm\) 0.41 \({}^{\text{BCb}}\) & 3.96 \(\pm\) 0.38 \({}^{\text{Ca}}\) \\
45 \({}^{\circ}\)C & 30 & 38.90 \(\pm\) 0.09 \({}^{\text{Cd}}\) & 33.76 \(\pm\) 0.82 \({}^{\text{Bc}}\) & 13.88 \(\pm\) 0.01 \({}^{\text{Cb}}\) & 4.21 \(\pm\) 0.17 \({}^{\text{Ca}}\) \\
45 \({}^{\circ}\)C & 45 & 33.50 \(\pm\) 0.35 \({}^{\text{Bd}}\) & 28.44 \(\pm\) 0.78 \({}^{\text{ABc}}\) & 11.44 \(\pm\) 1.05 \({}^{\text{Ab}}\) & 3.34 \(\pm\) 0.02 \({}^{\text{Ba}}\) \\
45 \({}^{\circ}\)C & 60 & 30.54 \(\pm\) 0.70 \({}^{\text{Bd}}\) & 26.08 \(\pm\) 0.36 \({}^{\text{Ac}}\) & 10.56 \(\pm\) 0.07 \({}^{\text{Ab}}\) & 3.06 \(\pm\) 0.00 \({}^{\text{Ba}}\) \\
65 \({}^{\circ}\)C & 15 & 38.90 \(\pm\) 0.27 \({}^{\text{Cd}}\) & 33.32 \(\pm\) 0.00 \({}^{\text{Bc}}\) & 13.92 \(\pm\) 0.91 \({}^{\text{Cb}}\) & 4.04 \(\pm\) 0.33 \({}^{\text{Ca}}\) \\
65 \({}^{\circ}\)C & 30 & 33.21 \(\pm\) 1.10 \({}^{\text{Bc}}\) & 33.21 \(\pm\) 0.19 \({}^{\text{Bc}}\) & 14.05 \(\pm\) 0.10 \({}^{\text{Cb}}\) & 3.89 \(\pm\) 0.08 \({}^{\text{Ca}}\) \\
65 \({}^{\circ}\)C & 45 & 28.21 \(\pm\) 0.40 \({}^{\text{Ad}}\) & 24.26 \(\pm\) 0.34 \({}^{\text{Ac}}\) & 9.68 \(\pm\) 0.75 \({}^{\text{Ab}}\) & 2.80 \(\pm\) 0.00 \({}^{\text{Aa}}\) \\
65 \({}^{\circ}\)C & 60 & 25.01 \(\pm\) 0.00 \({}^{\text{Ad}}\) & 21.65 \(\pm\) 0.66 \({}^{\text{Ac}}\) & 8.41 \(\pm\) 0.88 \({}^{\text{Ab}}\) & 2.45 \(\pm\) 0.07 \({}^{\text{Aa}}\) \\ Reference sample & & 24.83 \(\pm\) 1.40 \({}^{\text{Ad}}\) & 20.89 \(\pm\) 0.97 \({}^{\text{Ac}}\) & 8.39 \(\pm\) 0.73 \({}^{\text{Ab}}\) & 2.43 \(\pm\) 0.04 \({}^{\text{Aa}}\) \\ \hline \hline \end{tabular} Data are expressed as the average value over three replications \(\pm\) standard deviation. ANOVA to compare data; different lowercase letters in a row indicate a significant difference between solvents at one specific temperature and time, and different capital letters in a column indicate a significant difference between one solvent in a combination of time and temperature (Tukey’s test, \(p<\) 0.05). Abbreviations: AA, L-ascorbic acid.  
\end{table} 
Table 4: Content of L-ascorbic acid (AA) in freeze-dried rose fruits pomace after extraction with various solvents (water, methanol, and ethanol) at 25 \({}^{\circ}\)C, 45 \({}^{\circ}\)C, and 65 \({}^{\circ}\)C for 60 min.