## 4 Conclusions  
In this study, the drying kinetics of wheat (_Triticum aestivum_ L., cv. 'Pionier') under a coherent set of low-temperature drying conditions were investigated. A robust and automated measurement system using a high precision balance was employed as the basis for the real-time and continuous acquisition of drying data. Drying experiments revealed that temperature \(T\) of drying air had the greatest influence on the drying behavior for the specified range of applicability followed by relative humidity \(RH\) and velocity \(v\). Moreover, the applications of low temperatures for cooling, aeration and drying entailed a slow and gentle drying process due to the low water-uptake capacity as compared to drying with high temperatures. For the characterization of drying behavior, several semi-empirical models were employed, out of which Page model was found favorable to fit the experimental data based on statistical indicators. A generalized model for low-temperature drying with drying constant \(k\) ranging from 3.660 \(\times\) 10\({}^{-3}\) to 2.998 \(\times\) 10\({}^{-2}\) was established, which demonstrated a great potential to portray the drying behavior of wheat with a high accuracy (\(R^{2}\) = 0.997, \(RMSE\) = 1.285 \(\times\) 10\({}^{-2}\), \(MAPE\) = 6.5%). The temperature \(T\), relative humidity \(RH\) and velocity \(v\) of the drying air were embodied in the generalized model framework. Furthermore, an analytical approach for predicting the effective diffusion coefficients was established based on short time diffusive solution (\(R^{2}\) = 0.988, \(RMSE\) = 4.239 \(\times\) 10\({}^{-2}\), \(MAPE\) = 7.7%). A variation of effective diffusion coefficient from 2.474 \(\times\) 10\({}^{-12}\) to 4.494 \(\times\) 10\({}^{-11}\) was ascertained for the applied drying conditions (\(T\) = 10-50 \({}^{\circ}\)C, \(RH\) = 20-60% and \(v\) = 0.15-1.00 ms\({}^{-1}\)). The developed drying model can be employed in the design, modeling and optimization of cooling, aeration and low-temperature drying processes of wheat bulks, which apply the alike range of air conditions. Further investigations should embrace the assessment of nutritional and structural changes of wheat during the long drying times required for low-temperature drying. In addition, the evaluation of energy efficiency as compared to high-temperature drying methods needs to be investigated in further studies. Conceptualization, I.R., S.S. and J.M. ; methodology, I.R., S.S. and J.M. ; software, I.R. ; validation, I.R. ; formal analysis, I.R., S.S. and J.M. ; investigation, I.R. ; resources, I.R. and J.M. ; data curation, I.R. ; writing--original draft preparation, I.R. ; writing--review and editing, I.R., S.S. and J.M. ; visualization, I.R. ; supervision, J.M. ; project administration, I.R., S.S. and J.M. ; funding acquisition, J.M. All authors have read and agreed to the published version of the manuscript. This research was financially supported by the German Federal Ministry for Economic Affairs and Energy (BMWi), in the framework of the \"Zentrales Innovationsprogramm Mittelstand (ZIM)\" with project number KF2607404 LT4. Figure 7: Standardized regression coefficient from sensitivity analysis comprising temperature \(T\), relative humidity \(RH\) and airflow velocity \(v\). **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Conflicts of Interest:** The authors declare no conflict of interest. **Nomenclature**