## 3 Results and Discussion
### Determination of Phenolic Compounds in Dried Sourdoughs  
Phenolic compounds are secondary compounds usually produced by cereals and represent a group of phytochemical substances that can be divided into different types of components regarding chemical structure: phenolics, flavonoids, stilbenes, lignans, and tannins [49]. The more abundant acids in dry sourdoughs were DL-3-Phenyllactic acid, benzoic acid, and 3_A_-dihidroxihodroxiamic acid, as seen in Figures 2-5. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Samples**} & \multicolumn{4}{c}{**g of Lactic Acid/kg of Product**} \\ \cline{2-5}  & **Spray-Dry** & **Freeze-Dry** & **Dry at 40 \({}^{\circ}\)C** & **Dry at Low Humidity** \\ \hline Control & \(1.1\pm 0.0\)\({}^{\text{eB}}\) & \(0.6\pm 0.0\)\({}^{\text{dA}}\) & 0.7 \(\pm\) 0.0 \({}^{\text{eB}}\) & 0.7 \(\pm\) 0.0 \({}^{\text{eB}}\) \\ _Lactiplantihacillus plantarum_ TN10 \({}^{\star}\) & 26.3 \(\pm\) 0.2\({}^{\text{aA}}\) & 17.3 \(\pm\) 0.0 \({}^{\text{eB}}\) & 7.6 \(\pm\) 0.3 \({}^{\text{bC}}\) & 13.7 \(\pm\) 0.2 \({}^{\text{aC}}\) \\ _Lactiplantihacillus plantarum_ TF2 \({}^{\star}\) & 19.8 \(\pm\) 0.0 \({}^{\text{bA}}\) & 17.4 \(\pm\) 0.0 \({}^{\text{aB}}\) & 14.3 \(\pm\) 0.0 \({}^{\text{bC}}\) & 13.7 \(\pm\) 0.5 \({}^{\text{aC}}\) \\ _Pedicococcus_ TFS \({}^{\star}\) & 17.7 \(\pm\) 0.0 \({}^{\text{cA}}\) & 16.9 \(\pm\) 0.1 \({}^{\text{aA}}\) & 15.7 \(\pm\) 0.5 \({}^{\text{aB}}\) & 12.7 \(\pm\) 0.0 \({}^{\text{bC}}\) \\ _Pediococcus acidilictictictictic_ TE4 \({}^{\star}\) & 20.4 \(\pm\) 0.7 \({}^{\text{bA}}\) & 13.9 \(\pm\) 0.1 \({}^{\text{bB}}\) & 11.6 \(\pm\) 0.0 \({}^{\text{cC}}\) & 11.6 \(\pm\) 0.0 \({}^{\text{cC}}\) \\ _Pediococcus_ Tf6 \({}^{\star}\) & 15.7 \(\pm\) 0.0 \({}^{\text{dA}}\) & 10.5 \(\pm\) 0.5 \({}^{\text{eB}}\) & 8.6 \(\pm\) 0.1 \({}^{\text{dC}}\) & 8.5 \(\pm\) 0.1 \({}^{\text{dC}}\) \\ \hline \hline \end{tabular}  
* Strains: _Lactiplantihacillus plantarum_ TN10, _Lactiplantihacillus plantarum_ T2, _Pediococcus petrosacus_ TFS, _Pediococcus acilililtictictic_ TE4, and _Pediococcus petrosacus_ TIf6. Different lowercase letters mean a significant difference in lactic acid concentration between samples at the same drying technique. Different capital letters mean significant differences in the concentration of lactic acid between drying techniques (\(p\leq 0.05\)).  
\end{table} 
Table 7: Determination of the organic acids in the dry sourdoughs fermented with lactic acid bacteria. Figure 3: Determination of the phenolic compounds in lyophilized sourdoughs fermented with _Lactiplantiobacillus plantarum_ TN10, _Lactiplantiobacillus plantarum_ TF2, _Pediococcus pentosacus_ TF8, _Pediococcus acidilactic_ TE4, and _Pediococcus pentosacus_ Tf6. Figure 2: Determination of the phenolic compounds in atomized sourdoughs fermented with _Lactiplantiobacillus plantarum_ TN10, _Lactiplantiobacillus plantarum_ TF2, _Pediococcus pentosacus_ TF8, _Pediococcus acidilactic_ TE4, and _Pediococcus pentosacus_ Tf6. Figure 4: Determination of the phenolic compounds in sourdoughs fermented with _Lactiplantiobacillus plantarum_ TN10, _Lactiplantiobacillus plantarum_ TF2, _Pediococcus pentosacues_ TF8, _Peliococcus acidlactic_ TE4, and _Pediococcus pentosacus_ T16 and dried at 40 \({}^{\circ}\)C.  
Figure 5: Determination of the phenolic compounds in sourdoughs fermented with _Lactiplantiobacillus plantarum_ TN10, _Lactiplantiobacillus plantarum_ TF2, _Pediococcus pentosacues_ TF8, _Pediococcus acidlactic_ TE4, and _Pediococcus pentosacus_ T16 and dried at low humidity. [PERSON] et al. [50] report that the production of these compounds has a relation with the highest antifungal activity. Regarding the results of the determination of the antifungal activity obtained in the in vitro assays, the strains are good antifungal agents due to the phenolic compounds produced by the LAB, among others. [PERSON] et al. [51] studied the action of phenyllactic acid as an antifungal compound and the presence of phenyllactic acid in the samples has been related to the activity against fungi.