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Lopes D.D.C.,Federal University of Sao Joao del Rei | Steidle Neto A.J.,Federal University of Sao Joao del Rei | Vasco Junior R.,Embrapa National Maize and Sorghum Research Center
Journal of Stored Products Research | Year: 2015

Mathematical modeling has played a significant role in the post-harvest system of cereals, fruits and other food commodities. More specifically, simulations have increasingly been used for the optimal design, planning and operation of grain aeration systems. Many models have been proposed to simulate this process, and others have been adapted to this purpose. Among them, there are two equilibrium models which do not require expensive solution techniques and can be used to evaluate the process time, grain temperature and grain moisture content variations. This study deals with the evaluation of these models by comparing the simulation results with experimental data. Results showed that both models had good correlations with experimental data and presented a very similar performance. The two evaluated models can be easily implemented in computer programs, contributing to improvements in this process control and guaranteeing the management of grain quality during the storage period. © 2014 Elsevier Ltd. Source

Lanza F.E.,Federal University of Vicosa | Zambolim L.,Federal University of Vicosa | Veras da Costa R.,Embrapa National Maize and Sorghum Research Center | Vieira Queiroz V.A.,Embrapa National Maize and Sorghum Research Center | And 4 more authors.
Crop Protection | Year: 2014

The aims of this study were to perform morphological and molecular characterization of Fusarium species within the Liseola section isolated from corn grains from different geographic regions in Brazil, and to evaluate their potential for fumonisins production. The results showed that Fusarium verticillioides is the predominant species (99%) associated with corn grains, and other toxigenic species, Fusarium proliferatum, was incidental in Brazilian corn. Although there was a high variability in the total fumonisin production among the isolates (0.01-2.39μgg-1), all fifty isolates analyzed produce fumonisins. The level of total fumonisin production was not correlated with the geographic origin of the isolates. © 2014 Elsevier Ltd. Source

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