Dynamics of the particle moisture distribution during storage of wheat under laboratory and pilot-scale conditions |
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| Affiliation: | 1. Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany;2. Food Process Engineering, Technische Universität Berlin, Seestraße 13, 13353, Berlin, Germany;1. Department of Sustainable Agriculture and Biodiversity Ecosystem Management, School of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology (NM –AIST), P.O. Box 447, Arusha, Tanzania;2. Centre for Research, Agriculture Advancement, Teaching Excellence and Sustainability in Food and Nutrition Security (CREATES), Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania;3. Tanzania Agricultural Research Institute (TARI –Ilonga), P.O.Box 33, Kilosa, Tanzania;1. Durable Crop Research Department, Nigerian Stored Products Research Institute, P.M.B. 1489, Ilorin, Nigeria;2. Department of Zoology, University of Ibadan, Ibadan, Nigeria;3. Department of Entomology and Plant Pathology, Oklahoma State University, 127 Noble Research Center, Stillwater, OK, 74078-3033, USA;4. Vestergaard Frandsen SA, Chemin Messidor 5-7, 1006, Lausanne, Switzerland;5. Department of Agricultural and Environmental Engineering, University of Ibadan, Ibadan, Nigeria;1. Center for Small Grains, Save Kovačevića 31, 34000 Kragujevac, Serbia;2. University of Novi Sad, Institute of Food Technology, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia;3. University of Novi Sad, Faculty of Agriculture, Department for Plant and Environmental Protection, Square of Dositej Obradović 8, 21000 Novi Sad, Serbia;4. University of Kragujevac, Faculty of Science, Radoja Domanovića 12, 34000 Kragujevac, Serbia;1. Department of Life Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago;2. Department of Food Production, The University of the West Indies, St. Augustine, Trinidad and Tobago |
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| Abstract: | To predict the storability of grain, detailed information is required on the moisture distribution within the grain bulk since a significant variance can be expected in the moisture content between individual grain kernels during storage. Therefore, it is important to consider and determine the single kernel moisture content distribution. The aim of this work was to investigate mass transfer processes that occur during long-term and intermediate storage of grain. For it, the method of particle moisture distribution analysis by means of the Time Domain Nuclear Magnetic Resonance spectroscopy was used. For this purpose, fundamental laboratory-scale experiments were conducted in small storage containers. As these storage experiments revealed, the width of the particle moisture distribution decreased noticeably when there was enough air available in the container for moisture exchange. Thereafter, the storage experiments were extended to pilot-scale using barrels to store grain for months in the scope of about 90 kg per batch. These experiments were performed without ventilation so as to simulate dead zones of airflow that often occur under industrial-scale flat storage conditions. In the closed barrels, no equalization of the particle moisture content was observed even after eleven months of storage. The knowledge gained from the experiments conducted at the micro and meso levels facilitates the understanding of the mass transfer processes that occur during macro scale storage, which are difficult to examine as an entity. |
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| Keywords: | Wheat Storage Moisture content Particle moisture distribution Molds |
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