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| Coradi,Paulo C.; Fernandes,Carlos H. P.; Helmich,Jean C.. |
| ABSTRACT The aim of this study was to evaluate the influence of the initial moisture content of soybeans and the drying air temperatures on drying kinetics and grain quality, and find the best mathematical model that fit the experimental data of drying, effective diffusivity and isosteric heat of desorption. The experimental design was completely randomized (CRD), with a factorial scheme (4 x 2), four drying temperatures (75, 90, 105 and 120 ºC) and two initial moisture contents (25 and 19% d.b.), with three replicates. The initial moisture content of the product interferes with the drying time. The model of Wang and Singh proved to be more suitable to describe the drying of soybeans to temperature ranges of the drying air of 75, 90, 105 and 120 °C and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dimensioning; Optimization; Post-harvest.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400385 |
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| Coradi,Paulo C.; Martins,Márcio A.; da Costa,Douglas R.; Vigoderis,Ricardo B.; Tinôco,Ilda de F. F.. |
| ABSTRACT Animal welfare is essential for livestock yield gains, which has been ethically justifiable and socially acceptable. Thus, our research aimed to test computational fluid dynamics model (CFD) to simulate heated air within a poultry barn. Data were simulated in CFD software based on Navier-Stokes equations (geometry of 3 m x 6 m, considering a symmetric mesh). As boundary conditions, a temperature of 38ºC was considered for walls where heating pipe outlets are, to the west side, besides a heat flow of zero, in symmetry to the same side. As for the sides east, south and north, walls were taken as isolated, i.e. heat flow equals to zero. The aviary heating system did not achieve a homogeneous temperature distribution, heat flow, heated air pressure... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environment; Animals; Thermal comfort; Airflow. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000500768 |
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| Coradi,Paulo C.; Fernandes,Carlos H. P.; Helmich,Jean C.; Goneli,André L. D.. |
| ABSTRACT This study aimed to evaluate the effect of air-drying temperature and initial moisture content on volume shrinkage, physical quality and oil extraction yield of soybean grains. The grains used in this experiment were harvested at two distinct moisture levels of 19 and 25%. Then, these grains were taken to dryness at three different air temperatures of 75 °C, 90 °C and 105 °C, in a forced circulation convection oven of the air. The results showed a drying time reduction with increasing air temperatures. Regarding volume shrinkage, moisture content reductions influenced grain volume and the Rahman's model was the one that best fit the data. Moreover, the higher the air temperature, the greater the effects on soybean grain shrinkage and physical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extraction; Performance; Processing. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000500866 |
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| Coradi,Paulo C.; Lemes,Ângelo F. C.. |
| ABSTRACT This study aimed to verify the capacity of silo-dryer-aerator prototype equipment operating as a silo-storage-aerator for soybean quality analysis. Soybeans with water content of 17% (wet basis – w.b.) were dried and stored in a silo-dryer-aerator system that was designed using a drying chamber, four independent storage cells, and a static capacity of 164 kg. Another batch of grains was stored in a silo-storage-aerator with a capacity of 1,200 kg. The experiment was set up in a completely randomized factorial 5 × 4 experimental design including five grain batches stored after being dried at 30, 40, and 50 °C (mixed grains were dried at three temperatures) in the silo-dryer-aerator cells and one mixed grain batch stored in the silo-storage-aerator... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.); Postharvest; Processing; Quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400279 |
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| Coradi,Paulo C.; Sousa,Alisson H. S. de; Camilo,Lucas J.; Lima,Roney E.; Milane,Lélia V.; Lemes,Ângelo F. C.. |
| ABSTRACT The aim was to evaluate the physical quality of conventional and transgenic corn grains, through drying and wetting processes for marketing. The experimental design was completely randomized in a factorial scheme (7 x 3 x 2), corresponding to seven drying times (0, 20, 40, 60, 80, 100 and 120 min), three temperatures of the drying air (80, 100 and 120 °C) and two hybrids of corn (conventional AG 1051 and transgenic Herculex@ 30S31H). Grain drying was held in convection oven with forced air ventilation while the wetting was done in a B.O.D chamber. The water movement in the grain, the volume and the electrical conductivity were evaluated periodically. The results showed that the transgenic corn grain reduced the negative effects of drying and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AG 1051; Herculex@ 30S31H; Water content; Temperature. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900847 |
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| Coradi,Paulo C.; Borém,Flávio M.; Oliveira,João A.. |
| Para se comparar as alterações na qualidade do café natural e despolpado em condições de umidades relativas de 60 e 80% e temperatura controlada de 23 °C aos 90 e 180 dias de armazenamento, realizou-se este trabalho no Departamento de Engenharia e no Pólo de Tecnologia em Pós-Colheita do Café da Universidade Federal de Lavras. A colheita do café, variedade Topázio, foi seletiva, enquanto uma parte foi despolpada e a outra processada de forma natural; no entanto, uma parcela de cada tipo de café foi conduzida para a secagem em terreiro e a outra parcela para secagem com temperaturas de 40 e 60 °C; após a secagem, o café foi armazenado em ambiente hermético mantendo-se constantes as umidades relativas de 60 e 80%. Para avaliação da qualidade foram feitas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Topázio; Umidade; Temperatura; Terreiro. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662008000200011 |
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| Coradi,Paulo C.; Lacerda Filho,Adílio F.; Melo,Evandro C.. |
| The present work aimed at evaluating the quality of raw materials destined for animal feed production, as well as the quality of corn produced in different areas of the Minas Gerais State. The study was conducted in a feed mill for poultry, with production capacity of 1,000 t d-1. Samples of corn, soybean, flours, animal meals, and feed, during the year of 2008 were collected for analysis of moisture, acidity, peroxides, crude protein, ethereal extract, and physical classification of the corn for "type". The collection of samples, physical-chemical analysis and classification of corn according to "type" were performed at the Industrial Laboratory and at the Department of Agricultural Engineering of Federal University of Viçosa. It was concluded that: raw... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corn; Bran; Flour. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011000400015 |
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