## 3 Results and Discussion
### Total Phenolic Content and Antioxidant Activity  
Total phenolic content (TPC) and antioxidant activity (AOC-FRAP, DPPH, ABTS\({}^{+}\)) data are reported in Table 4. The different extraction techniques were compared using an analysis of variance (ANOVA). The comparison with literature indicates that our data are in accordance with those reported by different authors [60; 61; 62; 63; 64]. The influence of the extraction time on TPC was more evident for thyme RSLDE extracts and coriander Soxhlet extracts, with improved extraction for longer times (6 h with respect to 2 h). In the comparison of the different techniques, the highest values were registered for RSLDE extracts for thyme and hemp, at 6 h and 2 h, respectively. Indeed, in the case of coriander seeds, Soxhlet extraction at 6 h was more efficient. For all plant matrices, UAE extracts had the lowest TPC values. Concerning AOC (Table 4) of hemp and coriander seeds, a higher activity for the 2 h RSLDE extracts in all spectrophotometric assays was achieved, except for the DPPH. The highest antiradical activity was obtained for UAE extracts. Moreover, in the case of hemp, M demonstrated good activity, similarly to RSLDE extracts. It is known that the differences in the antioxidant activity might be related to the different availability of extractable components, resulting from the varied chemical composition of plants [65]. The amount of the antioxidant components that can be extracted from a plant material is mainly affected by the strength of the extraction procedure and may vary from sample to sample. Usually, the TPC and AOC of extracts obtained by reflux extraction technique (e.g., Soxhlet) are lower than \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & **TPC** & **FRAP** & **DPPH** & **ABTS\({}^{+}\)** \\
**(mg GAE/g Dry Extract)** & **(mg TE/g Dry Extract)** & **(mg TE/g Dry Extract)** & **(mg TE/g Dry Extract)** \\ \hline \hline  & & **Thyme** & & \\ \hline N2h & 141.86 \(\pm\) 7.85 b & 63.86 \(\pm\) 0.29 b & 108.17 \(\pm\) 0.08 a & 23.62 \(\pm\) 8.20 d \\ N6h & 179.67 \(\pm\) 12.71 a & 66.95 \(\pm\) 5.74 b & 108.52 \(\pm\) 0.16 a & 52.12 \(\pm\) 0.11 bc \\ S2h & 157.86 \(\pm\) 1.71 b & 68.48 \(\pm\) 1.23 ab & 108.57 \(\pm\) 0.08 a & 49.07 \(\pm\) 0.11 c \\ S6h & 154.26 \(\pm\) 11.23 b & 73.53 \(\pm\) 1.29 a & 107.19 \(\pm\) 1.22 a & 134.46 \(\pm\) 0.22 a \\ UAE & 107.91 \(\pm\) 9.01 c & 40.60 \(\pm\) 1.04 c & 98.50 \(\pm\) 1.71 b & 53.72 \(\pm\) 0.34 bc \\ M & 142.08 \(\pm\) 1.69 b & 40.25 \(\pm\) 2.93 c & 92.60 \(\pm\) 4.33 c & 57.56 \(\pm\) 0.34 b \\ \hline \hline  & & **Hemp** & & \\ \hline N2h & 140.25 \(\pm\) 2.56 a & 81.073 \(\pm\) 2.31 ab & 34.02 \(\pm\) 1.86 b & 557.16 \(\pm\) 6.57 a \\ N6h & 139.52 \(\pm\) 2.49 a & 80.21 \(\pm\) 1.76 abc & 33.76 \(\pm\) 0.89 b & 485.10 \(\pm\) 4.16 b \\ S2h & 120.55 \(\pm\) 5.42 b & 74.66 \(\pm\) 0.81 d & 29.92 \(\pm\) 0.32 d & 394.39 \(\pm\) 3.41 c \\ S6h & 124.25 \(\pm\) 3.61 b & 78.69 \(\pm\) 1.88 bc & 31.54 \(\pm\) 0.08 cd & 433.22 \(\pm\) 19.81 bc \\ UAE & 110.30 \(\pm\) 3.71 c & 77.22 \(\pm\) 0.92 cd & 45.04 \(\pm\) 1.23 a & 381.26 \(\pm\) 9.05 c d \\ M & 125.12 \(\pm\) 3.54 b & 83.14 \(\pm\) 1.63 a & 32.43 \(\pm\) 0.32 bc & 502.16 \(\pm\) 5.62 ab \\ \hline \hline  & & **Coriander Seeds** & & \\ \hline N2h & 19.87 \(\pm\) 1.52 b & 18.43 \(\pm\) 0.15 a & 147.60 \(\pm\) 3.97 b & 48.05 \(\pm\) 1.60 a \\ N6h & 17.67 \(\pm\) 0.47 c & 12.69 \(\pm\) 0.39 d & 163.55 \(\pm\) 2.94 b & 46.48 \(\pm\) 1.78 a \\ S2h & 15.54 \(\pm\) 0.57 d & 15.22 \(\pm\) 0.39 bc & 128.84 \(\pm\) 3.94 b & 21.90 \(\pm\) 2.00 b \\ S6h & 24.36 \(\pm\) 1.01 a & 16.91 \(\pm\) 2.34 ab & 150.61 \(\pm\) 4.92 b & 23.85 \(\pm\) 1.60 b \\ UAE & 3.01 \(\pm\) 0.61 e & 13.45 \(\pm\) 1.26 cd & 219.95 \(\pm\) 2.44 a & 1.12 \(\pm\) 0.14 d \\ M & 18.95 \(\pm\) 0.11 bc & 14.40 \(\pm\) 0.09 cd & 177.23 \(\pm\) 1.46 ab & 5.64 \(\pm\) 1.04 c \\ \hline \hline  & & & \\ \end{tabular} Results followed by the same case-letter are not different according to [PERSON]’s HSD post-hoc test (\(p>0.05\)).  
\end{table}