## 3 Chemical Composition of _Hyssopus officinalis_ L. and _Agastache foeniculum_ (Pursh) Kuntze EOs  
Tables 1 and 2 summarize the main insights related to the chemical compositions of the two plants. Hydrodistillation and steam distillation of the aerial parts of _H. officinalis_ L. and _Agastache foeniculum_ (Pursh) Kuntze produced light-yellow EOs, with a yield between 0.1 and 2% [20,21] for _H. officinalis_ and 0.37 and 2.78% [19,22] for _A. foeniculum_. The difference in the yield of EOs could be attributed to harvest country, even to various regions of the same country. The differences may also depend on the type of plant used, as well as the harvesting period. [PERSON] et al., 2024 [21], state that the fluctuation in EO yield could vary throughout the vegetation cycle, being largely influenced by genetic factors, developmental stages, and harvest timing. Similarly, the composition of the EO is influenced by various factors, including climatic conditions, the origin of the plant material, subspecies or variety, the plant's developmental stage, age, cultivation methods, growing location and soil type, harvest timing, the specific plant parts collected and phenotype [7], extraction techniques, and storage conditions [1]. The differences in oil composition determine its organoleptic and physiological properties and, therefore, its potential for application in different industries [23]. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Method of Extraction**} & **Part of the Plant** & **Stage of the Plant at Harvest** & \multicolumn{2}{c}{**Mass of the Plant Material Used for Extraction**} & \multirow{2}{*}{**Yield**} & \multirow{2}{*}{**Origin of the Plant**} & \multirow{2}{*}{**Reference**} \\  & **Vsed for** & **Plant at Harvest** & & & & \\  & **Extraction** & & & & & \\ \hline Steam distillation & NM & NM & NM & NM & Bulgaria & [24] 1 \\ \hline Steam distillation & Leaves & NM & 100 g & NM & Spain & [25] \\ \hline Steam distillation & NM & Flowering & NM & 0.21\% (\
u/w) & Romania & [26] \\ \hline Hydrodistillation with a & & & & & & \\ Clevenger-type & Aerial parts & NM & 100 g & NM & Serbia & [8] \\ apparatus & & & & & & \\ \hline Hydrodistillation using & & & & & & \\ a Deryng apparatus & & & & & & \\ \hline Hydrodistillation with a & & & & & & \\ Clevenger-type & Aerial parts & NM & 200 g & 0.6\% (w/w) & Serbia & [14] 3 \\ apparatus & & & & & & \\ \hline NM & Aerial parts & NM & NM & NM & Italy & [27] \\ \hline \hline \multirow{2}{*}{\begin{tabular}{c} NM \\ \end{tabular} } & Aerial parts & NM & 10 kg & NM & Egypt & [28] \\ \hline \hline \multirow{2}{*}{\begin{tabular}{c} Hydrodistillation with a \\ Clevenger-type \\ apparatus \\ \end{tabular} } & Aerial parts & NM & 50 g & EO1: 0.70\% & \multirow{2}{*}{Italy} & \multirow{2}{*}{[29] 4} \\  & & & & EO2: 0.28\% & & \\  & & & EO3: 0.40\% & & \\ \hline \hline \multirow{2}{*}{\begin{tabular}{c} Hydrodistillation with a \\ Clevenger-type \\ apparatus \\ \end{tabular} } & & & & EO1: 0.42\(\cdot\)0.56 (\(v/w\)) & \multirow{2}{*}{Kosovo} & \multirow{2}{*}{[20] 5} \\  & & & EO3: 0.60\(\cdot\)0.90 (\(v/w\)) & & \\  & & & EO4: 1.70\(\cdot\)2.00 (\(v/w\)) & & \\  & & & EO5: 0.80\(\cdot\)1.06 (\(v/w\)) & & \\ \hline \hline \multirow{2}{*}{\begin{tabular}{c} Hydrodistillation with a \\ Clevenger-type \\ apparatus \\ \end{tabular} } & Aerial parts & NM & 50 g & NM & Iran & [30] \\ \hline \hline \multirow{2}{*}{\
\begin{tabular}{c} Hydrodistillation with a \\ Clevenger-type \\ apparatus \\ \end{tabular} } & Aerial parts & Flowering & NM & 1.1\% (w/w) & Iran & [31] \\ \hline \hline \multirow{2}{*}{
\begin{tabular}{c} Hydrodistillation with a \\ Clevenger-type \\ apparatus \\ \end{tabular} } & NM & NM & 160 g & NM & Iran & [32] \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Presentation of the data for the _H. officinalis_ EO.