## 3 Results and Discussion
### Influence of Fungal Biostarter on Bacterial Growth on DAB  
The bacterial growth (as a CFU number) was tested over 21 days of dry-aging (at the start--0 days--and then once per week, throughout the experiment) in order to describe how the presence of fungal strains can affect bacterial development on DAB. No significant differences between the samples inoculated with the fungal biostarter and the control were observed after 21 d of seasoning (Figure 3). The highest overall number of CFUs (10,200,000 units per sample) was observed in both cases after 7 days of aging, and then it started to decrease. However, the drop in the bacteria colonies counts was more explicit and faster in the biostarter-aged samples compared to the control ones.  
\begin{table}
\begin{tabular}{c c c c} \hline
**Compound** & **Compound** & **Control Samples** & \multicolumn{2}{c}{**Samples with**} \\
**Group** & **Compound** & **Control Samples** & **Biostarter (M. flavus)** \\ \hline \multirow{8}{*}{Alcohols} & 2-Propanol & \(1.92\pm 0.71\) & n.d. \\  & 1-Hexanol & \(0.72\pm 0.17\) & n.d. \\  & 1-Heptanol & \(1.89\pm 0.67\) & n.d. \\  & 1-Octen-3-ol & \(1.17\pm 0.12\) & \(0.61\pm 0.08\) \\  & 1-Hexen-3-ol & \(0.80\pm 0.43\) & n.d. \\  & 1-Octanol & \(7.12\pm 1.18\) & 6.02 \(\pm\) 0.78 \\  & 1-Decanol & \(5.76\pm 1.37\) & n.d. \\  & 1-Tetradecanol & n.d. & 0.09 \(\pm\) 0.04 \\ \hline \multirow{4}{*}{Ketones} & 2-Butanone & \(0.69\pm 0.16\) & \(0.36\pm 0.06\) \\  & 3-hydroxy-2 Butanone & \(3.84\pm 0.95\) & n.d. \\ \hline \multirow{8}{*}{Aldehydes} & Pentanal & \(0.43\pm 0.18\) & \(0.94\pm 0.22\) \\  & Hexanal & \(2.43\pm 0.22\) & \(8.69\pm 1.28\) \\  & Heptanal & \(6.81\pm 1.13\) & \(10.18\pm 0.01\) \\  & Octanal & \(11.06\pm 2.00\) & \(12.51\pm 1.35\) \\  & Nonanal & \(43.76\pm 4.77\) & \(43.92\pm 1.66\) \\  & cis-2-Ethydcyclopentane & \(0.14\pm 0.04\) & n.d. \\  & carbosaldehyde & Decanal & \(3.35\pm 0.34\) & n.d. \\  & 2-Decneal & \(1.97\pm 0.19\) & \(3.80\pm 0.38\) \\  & 2-Nonneal & n.d. & \(3.76\pm 0.70\) \\ \hline \multirow{4}{*}{Hydrocarbones} & Octane & \(0.71\pm 0.15\) & n.d. \\  & 6-Tetradecene & \(0.09\pm 0.06\) & n.d. \\  & Tetradecane & \(0.45\pm 0.08\) & n.d. \\ \hline \multirow{2}{*}{Terpenes} & L-Limonene & \(1.13\pm 0.18\) & \(1.08\pm 0.07\) \\ \hline \multirow{2}{*}{Acids} & Heptanoic acid & \(2.72\pm 0.23\) & \(0.69\pm 0.07\) \\  & trans-2-Undecenoic acid & n.d. & \(4.08\pm 0.44\) \\ \hline \multirow{4}{*}{Esters} & Formic acid, hexyl ester & n.d. & \(0.90\pm 0.22\) \\  & 10-Undecenoic acid, & n.d. & \(0.14\pm 0.03\) \\  & methyl ester & n.d. & \(0.27\pm 0.02\) \\  & 4-methyl-pentanoic acid, methyl & \(0.14\pm 0.03\) \\  & ester & n.d. & \(0.27\pm 0.02\) \\ \hline \multirow{4}{*}{Others} & 1,2-dimethyl-, cis-Cyclopentane & n.d. & \(1.07\pm 0.20\) \\  & 5-propyl-decane & \(0.47\pm 0.19\) & n.d. \\ \cline{1-1}  & 4,5-diethyl-octane & \(0.07\pm 0.03\) & n.d. \\ \hline \end{tabular} n.d.—not detected. \({}^{\text{a,b}}\)—values within a row with different letters are significantly different (\(p\leq 0.05\)).  
\end{table}
Table 3: Comparison of the most abundant volatile aroma compounds [%] extracted from the beef control samples and the beef samples with biostarter (_M. flavus_).