## 3 Results and Discussion
### UV-VIS Characteristics of the Extracts  
The results of testing the ultraviolet absorption capacity of the obtained extracts of _A. reptans_ herb are depicted in Figures 2 and 3 through ultraviolet-visible (UV-Vis) spectra (samples L_D--dried leaves and R_D--dried root) and also for the freeze-dried raw material (L_L--freeze-dried leaves and R_L--freeze-dried root). Notably, for plants dried at 40 \({}^{\circ}\)C for 24 h and those dried using a freeze-dryer, extracts from the above-ground part of the plant exhibit superior UV-Vis absorption capabilities. When examining extracts in a 10 mm standard cuvette, particularly those dried using the freeze-drying process, the most characteristic peaks were observed.  
In the case of the root extract, the peak I displayed a wavelength of 209.5 nm with an absorbance of 2.948, spanning a wavelength range of 201.8 nm to 213.8 nm. The absorbance value reached 2.948, and the integral value was 129.2. Additionally, peak II showed a wavelength of 216.5 nm and an absorbance of 2.876, covering a wavelength range from 213.75 nm to 277.0 nm. Absorbance measured 2.876, and the integral value was 322.2.  
For the leaf extract, Peak I exhibited a wavelength of 326.5 nm with an absorbance of 1.324, encompassing a wavelength range from 308.0 nm to 632.0 nm. The half-width was 62.0, and the absorbance value was 1.324. The integral value was 341.6, and the Gauss integral measured 349.5. These detailed spectral characteristics provide comprehensive  
\begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Tested Extract**} & \multicolumn{2}{c}{**Total Polyphenol Content**} \\ \cline{2-3}  & **(mg/mL)** & **(mg GAE/g)** \\ \hline R\_D & 0.10 \(\pm\) 0.02 & 204.53 \(\pm\) 0.03 \\ L\_D & 0.16 \(\pm\) 0.04 & 315.49 \(\pm\) 0.04 \\ R\_L & 0.12 \(\pm\) 0.03 & 234.99 \(\pm\) 0.03 \\ L\_L & 0.14 \(\pm\) 0.03 & 271.98 \(\pm\) 0.02 \\ \hline \hline \end{tabular}
\end{table}
Table 7: Content of total polyphenols in _A. reptans_ extracts (L_D—dried leaves, R_D—dried roots, L_L—freeze-dried roots).  
insights into the distinct absorption peaks of both root and leaf extracts, enriching our understanding of their UV-Vis absorption capabilities.  
The examination of extracts in a 10 mm standard cuvette, dried at room temperature, revealed distinctive peaks, particularly evident in the leaf extract. For the leaves, Peak I displayed a wavelength of 212.5 nm with an absorbance of 2.712, covering a wavelength range from 210.5 nm to 214.8 nm. Absorbance reached 2.712, and the integral value was 48.5.  
Furthermore, Peak II in the leaves extract exhibited a wavelength of 330.0 nm with an absorbance of 0.990, spanning a wavelength range from 307.8 nm to 392.0 nm. The half-width measured 57.0, and the absorbance value was 0.990. The integral value was 211.9, and the Gauss integral amounted to 240.3.  
Figure 3: UV–Vis spectrum of plants dried at 40 \({}^{\circ}\)C (L_D—dried leaves and R_D—dried roots).  
Figure 2: UV–Vis spectrum of freeze—dried plants (L_L—freeze-dried leaves and R_L—freeze-dried root).  
These detailed findings provide a nuanced understanding of the leaf extract's UV absorption characteristics, showcasing specific peaks and their associated parameters. The observed peaks contribute valuable insights into the UV absorption capacity of the leaves, offering a comprehensive perspective on potential applications.  
The analysis of the obtained spectra of _A. reptans_ extracts confirmed their UV-absorption ability in the ranges of 280-380 nm wavelengths. The higher absorbance values for extracts obtained from lyophilized material are worth noting.