## 2 Results
### The Extracts Chemical Profile  
Ultrasonic extraction (USE) of the honey was first performed separately with two solvents: (a) the mixture of pentane and diethyl ether (1:2, \(\
icefrac{\
u}{\
u}\)) (A), and (b) dichloromethane (B), as in our previous research [12,13]. Significant differences were found among chemical profiles of the extracts (Table 2). The extract A contained 1,4-benzenediol (25.8%) as the major compound followed by a variety of benzene derivatives, particularly benzoic acid and its \(p\)-substituted derivatives: 4-hydroxybenzoic acid (16.4%), benzoic acid (4.4%), and 4-methoxybenzoic acid (3.7%). 4-Hydroxybenzaldehyde (10.3%) and methyl syringae (9.8%) were also quite abundant. In contrast, the extract B contained as the major compound C\({}_{13}\)-norisoprenoid (_E_)-4-(r-1\({}^{\prime}\),t-2\({}^{\prime}\),c-4\({}^{\prime}\)-trihydroxy-3\({}^{\prime}\),6\({}^{\prime}\),6\({}^{\prime}\)-trimethylcyclohexyl)-but-3-en-2-one (18.3%), which was present only with 3.1% in the extract A. Aromatic compounds were present among the major compounds (similar as in the extract A: methyl syringae (12.2%), 4-hydroxybenzaldehyde (9.9%), 4-methoxybenzoic acid (4.2%), and benzoic acid (3.1%)). However, the major difference in 4-hydroxybenzoic acid and hydroquinone abundance was noted among two extracts (dominated in A). Both of them also contained other C\({}_{13}\)-norisoprenoids (solvent A; solvent B): 3-oxo-\(\alpha\)-ionone (1.8%; 1.5%), vomifioliol (1.1%; 2.6%), and 3-oxo-7,8-dihydro-\(\alpha\)-ionone (0.5%; 0.1%). Higher aliphatic compounds were present among minor constituents in both extracts as well as _trans_- or _cis_-linal oxides (furan type). \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Compound**} & \multirow{2}{*}{**RI 1**} & \multirow{2}{*}{**RI 2**} & **A** & **B** & **C** & **D** & **E** & **F** \\ \cline{5-10}  & & & & \%\({}^{\circ}\)3 & \%\({}^{\circ}\)3 & \%\({}^{\circ}\)2 & \%\({}^{\circ}\)3 & \%\({}^{\circ}\)3 & \%\({}^{\circ}\)3 \\ \hline
1 & 2-Furancarboxaldehyde & \textless{}900 & 835 & - & - & - & - & 0.6 & 0.1 \\ \hline
2 & 4-Methyloctane & \textless{}900 & / & 0.1 & - & 0.1 & 0.1 & - & - \\ \hline
3 & 1,3-Dimethylbenzene \({}^{\ast\ast}\) & \textless{}900 & 864 & 1.5 & - & 0.6 & 0.7 & 0.6 & - \\ \hline
4 & 2-Furancmethanol & \textless{}900 & 866 & - & - & - & - & 0.1 & - \\ \hline
5 & Ethylbenzene & \textless{}900 & 868 & 0.2 & - & 0.6 & 0.2 & 0.1 & - \\ \hline
6 & 3-Methylbutanoic acid (Isovaleric acid) & \textless{}900 & 888 & - & - & - & - & 0.1 & - \\ \hline
7 & 3-Methylbut-2-enoic acid \({}^{\ast}\) & \textless{}900 & / & 0.1 & 0.2 & - & 0.1 & 0.1 & - \\ \hline
8 & Ethenybenzene & \textless{}900 & 892 & 0.1 & - & - & 0.1 & - & - \\ \hline
9 & 1,2-Dimethylbenzene \({}^{\ast\ast}\) & \textless{}900 & 897 & 0.3 & - & 0.8 & 0.1 & - & - \\ \hline
10 & Methoxybenzene & 912 & / & 0.1 & - & - & 0.2 & - & - \\ \hline
11 & 2-Acetylfuran & 918 & 914 & - & - & - & - & 0.1 & - \\ \hline
12 & Benzaldehyde \({}^{\ast}\) & 965 & 966 & 0.1 & 0.2 & 0.7 & 0.1 & - & - \\ \hline
13 & 5-Methylfurantal \({}^{\ast}\) & 970 & 966 & - & - & - & - & 0.1 & - \\ \hline
14 & (_E_)-Hex-3-enoic acid \({}^{\ast}\) & 991 & / & 0.5 & 0.3 & - & 0.2 & - & - \\ \hline
15 & (_Z_)-Hex-3-enoic acid & 1013 & 1013 & 0.1 & 0.2 & - & 0.1 & 0.1 & - \\ \hline
16 & Pantolactone & 1044 & / & 0.1 & 0.2 & - & 0.1 & 0.1 & 0.2 \\ \hline
17 & Phenylacetaldehyde \({}^{\ast}\) & 1048 & 1049 & 0.1 & 0.2 & 0.6 & 0.1 & - & - \\ \hline
18 & Acetophenone \({}^{\ast}\) & 1065 & 1065 & - & - & - & 0.1 & - & - \\ \hline
19 & _cis_-Linalool oxide (furan type) & 1076 & 1075 & 0.7 & 0.3 & 3.3 & 0.2 & 1.3 & 0.1 \\ \hline
20 & _trans_-Linalool oxide (furan type) & 1091 & 1091 & 0.2 & 0.2 & 1.2 & - & 0.4 & - \\ \hline \end{tabular}
\end{table} 
Table 2: The volatile organic compounds composition of the sample determined by ultrasonic solvent extraction (USE)/GC-FID; GC-MS.  
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**No.