## 3 Results
### Experiment on a 250 L Scale (1250 L per m\({}^{2}\) Filtration Surface)  
#### 3.2.1 Aroma Analysis  
In the large-scale experiment, samples were taken continuously for analysis (in each case after 25 L or 125 L of filtration capacity per m\({}^{2}\)). This test was only carried out on trial wine A. Table 3 and the Supplementary Material Table S6 show the results of the relative aroma loss compared with the variant 0. It was considered, statistically, whether there was a constant significant difference over the ten measurement repetitions between the common filtration with EKS layers and the filtration with Fibrafix(r) TX layers. It was found that there was a significant difference in geosmin in four out of seven ester groups and the free monoterenes. In each of these cases, the aroma loss was higher in the variants with Fibrafix(r) TX than in the variants with EKS layers. If we look at the individual compounds, this result becomes even clearer: in 23 of 36 detected aromas, the aroma loss was higher in the wines filtered with Fibrafix(r) TX layers than in the wines filtered with EKS layers. It is noticeable that the aroma loss of all compounds decreased with increasing filtration volume. Not only the aroma loss in the course of filtration was examined, but also the final cuvices were compared with each other. It was found that filtration with Fibrafix(r) TX layers reduced the geosmin content by almost 75.9 \(\pm\) 3% at a total filtration capacity of 1250 L per m\({}^{2}\) filter area. This compares to a small reduction of 4.4 \(\pm\) 3% with EKS filtration. The aroma loss of ester compounds and free monoterenes was higher (significant for four out of seven ester groups and the monoterenes) and, in some cases, considerable in the filtration with Fibrafix(r) TX layers compared with the EKS filtration and amounted to 55% for ethyl ester and 52% for methyl ester (Figure 6). Figure 6: Reduction in geosmin and loss of aroma of ester compounds and free monoterenes in the large-scale experiment: comparison of the end products after 1250 L filtration capacity per m\({}^{2}\) filter area. Significance test by simple ANOVA. Same letters mean no significant difference based on significance level \(p\leq 0.05\) with alphabetical order, starting at a (smallest value) to b (largest value). \begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline
**Filtration Capacity in Lines per m\({}^{\text{1}}\)** & **ANOVA 1\({}^{\text{1}}\)** & **255** & **250** & **375** & **500** & **625** & **750** & **875** & **1000** & **1125** & **1280** \\ \hline
**Geomin** & EKS & F \(\pm\) 508,527 & 9\% & 3\% & 3\% & 2\% & 5\% & 5\% & 5\% & 4\% & 4\% & 3\% \\  & Fluors & P \(<\) 0001 & 8\% & 8\% & 8\% & 8\% & 7\% & 6\% & 6\% & 70\% & 6\% & 6\% \\  & EKS & F \(\pm\) 78,872 & 10\% & 10\% & 10\% & 9\% & 8\% & 9\% & 8\% & 8\% & 8\% & 7\% \\  & Fluors & P \(=\) 0004 & 40\% & 40\% & 40\% & 38\% & 3\% & 3\% & 3\% & 3\% & 3\% & 2\% \\ \hline
**accute esters of higher alcohols** & EKS & F \(\pm\) 4285 & 14\% & 14\% & 14\% & 12\% & 13\% & 12\% & 12\% & 11\% & 10\% \\  & Fluors & P \(<\) 0107 & 3\% & 3\% & 3\% & 2\% & 2\% & 2\% & 2\% & 2\% & 2\% & 2\% \\ \hline ethyl esters of carboxylic acids with an & EKS & F \(\pm\) 903,666 & 6\% & 6\% & 5\% & 5\% & 4\% & 3\% & 4\% & 3\% & 2\% \\  & even number of C atoms & Fluors & P \(<\) 0001 & 6\% & 6\% & 6\% & 6\% & 5\% & 5\% & 5\% & 5\% & 4\% \\  & others of higher alcohols and & EKS & F \(\pm\) 0172 & 5\% & 5\% & 5\% & 5\% & 4\% & 4\% & 4\% & 4\% & 3\% \\  & medium-length chain carboxylic acids & Filtors & P \(=\) 0700 & 6\% & 6\% & 6\% & 6\% & 6\% & 5\% & 5\% & 5\% & 4\% \\ \hline ethyl esters of carboxylic acids with an & EKS & P \(<  
Figure 7 shows the aroma loss of the individual compounds, and the Supplementary Material (Table S7) shows the significance table. The most significant aroma loss (>80%) from filtration with the special layers was detected for compounds ethyl decanoate, methyl decanoate, and hexyl acetate.