## 3 Results and Discussion
### Headspace Solid-Phase Microextraction (HS-SPME/GC-Ms)
Almost all of the previously mentioned compounds (1,8-cineole, linalool, \(\beta\)-thujone, \(\alpha\)-thujone camphor and carvacrol) were present in lower abundance in the two- and three-component mixture headspace, depending on the ratio of the herbal extracts. It was predicted that two-component mixtures of \(S\) and \(L\) would have the highest amount of 1,8-cineole since the abundance of 1,8-cineole was the highest in their extracts, but the obtained results did not match our expectations. Although a modest abundance of 1,8-cineole was found in the _WT_ extract, it was the most abundant headspace constituent in the _WTL13_ mixture (29.32%). Linalool was also detected in two-component mixtures where \(L\) was dominant, primarily in _SL13_ and _WTL13_ (14.56 and 14.27%, respectively), whereas it was absent in three-component mixtures in concentrations higher than 10%. \(\beta\)-thujone and \(\alpha\)-thujone are related to \(S\) mixtures, so the abundance of these moleculeswas higher in two-component mixtures where \(S\) predominated, for example, \(SL31\) and \(WTS13\) (30.72%; 30.55% for \(\beta\)-thujone and 18.03%; 17.52% for \(\alpha\)-thujone). The percentage of \(\alpha\)-thujone was slightly higher in the \(SL31\) mixture than in the pure extract of \(S\) (17.99%). In three-component mixtures, the abundance of these compounds is still high (23.36 and 12.73% in \(WTSL121\) for \(\beta\)- and \(\alpha\)-thujone), but because of a lower amount of the \(S\) extract, these values were expectedly lower. Camphor and carvacrol are more specific for \(S\) and \(WT\), whereas the presence of these molecules was not established in the \(L\) extract. However, carvacrol was still found in the mixtures of \(L\), with the highest amount in \(WTL31\) (12.64%). On the other hand, the highest abundance of camphor was found in the \(WTS13\) mixture (11.66%), followed by the \(SL31\) mixture (10.89%). Aside from the already described compounds, HS-SPME/GC-MS analysis showed the presence of other bioactives that also contributes to sensory properties, although they are represented in lower percentages. One of them is \(\alpha\)-terpineol, the most commercially important monoterene alcohol in the flavor industry with a floral, typically lilac odor [108]. Obtained results showed the presence of \(\alpha\)-terpineol in the herbal extracts and mixtures, but it was mainly specific to \(L\) (6.39%) and mixtures where \(L\) dominates, such as \(SL13\) (5.23%), \(WTL13\) (4.9%) and \(WTSL112\) (3.24%). Borneol is another compound that occurs in lower abundance and can contribute to the aromatic profile. Borneol is a compound that provides a fragment, spicy and cool flavor [109]. Analysis showed the presence of borneol in the extracts of \(WT\) and \(S\) (6.12%; 3.71%) and their two-component mixtures, where the highest percentage of borneol was found in the \(WTS11\) mixture (4.07%), followed by \(WTSL221\) (3.63%) in the three-component mixture. 1,4-Dibhydroxy-2,5-di-tert-butylbenzene occurred in a lower percentage in the \(WT\) extract (7.66%) and a much higher percentage in the two-component \(WTL31\) and \(WTS31\) mixtures (18.51 and 16.75%).