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| Rezende,Elisângela de Fátima; Borges,Josiane Gonçalves; Cirillo,Marcelo Ângelo; Prado,Guilherme; Paiva,Leandro Carlos; Batista,Luís Roberto. |
| The genera Aspergillus comprises species that produce mycotoxins such as aflatoxins, ochratoxins and patulin. These are cosmopolitan species, natural contaminants of agricultural products. In coffee grains, the most important Aspergillus species in terms of the risk of presenting mycotoxins belong to the genera Aspergillus Section Circumdati and Section Nigri. The purpose of this study was to assess the occurrence of isolated ochratoxigenic fungi of coffee grains from organic and conventional cultivation from the South of Minas Gerais, Brazil, as well as to evaluate which farming system presents higher contamination risk by ochratoxin A (OTA) produced by fungi. Thirty samples of coffee grains (Coffea arabica L.) were analysed, being 20 of them of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus ochraceus; Ochratoxin A; Arabica coffee. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200006 |
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| Silva,Bruno Montoani; Santos,Walbert Junior Reis dos; Oliveira,Geraldo César de; Lima,José Maria de; Curi,Nilton; Marques,João José. |
| The knowledge of the water content in the soil profile is essential for an efficient management of crop growth and development. This work aimed to use geostatistical techniques in a spatio-temporal study of soil moisture in an Oxisol in order to provide that information for improved crop management. Data were collected in a coffee crop area at São Roque de Minas, in the upper São Francisco River basin, MG state, Brazil. The soil moisture was measured with a multi-sensor capacitance (MCP) probe at 10-, 20-, 30-, 40-, 60- and 100-cm depths between March and December, 2010. After adjusting the spherical semivariogram model using ordinary least squares, best model, the values were interpolated by kriging in order to have a continuous surface relating depth x... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water use efficiency; Soil management; Deep soil tillage; Plant-available water; Arabica coffee. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000100039 |
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| Bicho,Natalina Cavaco; Leitão,António Eduardo; Ramalho,José Cochicho; Lidon,Fernando Cebola. |
| Fast and non-destructive indicators were evaluated as tools to measure the technological quality of Arabica and Robusta coffee. Accordingly, considering the roasting intensity in highly valuable commercial samples, volume, mass, apparent density, moisture, total ash, ash insoluble in hydrochloric acid, and ether extract were characterized. The chromatic parameters L*, C*, Hº were measured using illuminants D65 and C. It was found that in roasted coffee beans, the parameters L*, C*, Hº, and coordinate b* had an antagonist interaction due to an increase in the roasting intensity, whereas after milling, only L* and Hº decreased progressively. Considering that the parameters L* and Hº followed similar patterns using both illuminants, D65 and C, it can be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arabica coffee; Chromatic parameters; Robusta coffee. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000300004 |
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| Alfonsi,Waldenilza Monteiro Vital; Coltri,Priscila Pereira; Zullo Júnior,Jurandir; Patrício,Flávia Rodrigues Alves; Gonçalves,Renata Ribeiro do Valle; Shinji,Kaio; Alfonsi,Eduardo Lauriano; Koga-Vicente,Andrea. |
| Abstract: The objective of this work was to simulate the geographical distribution of the incubation period of coffee leaf rust in Coffea arabica, using data of two regional climate models, Eta-HadGEM2-ES and Eta-MIROC5. The scenario of high greenhouse gas emission (RCP 8.5 W m-2) was used for the states of Minas Gerais and São Paulo, Brazil, for current and future climate scenarios. The behavior of six different regression equations for incubation period (IP), available in the literature, was also analyzed as affected by data from the regional climate models. The results indicate the possibility of an increase in the affected area in the studied region, when the IP is less than 19 days, from 0.5% for Eta-MIROC5 to 14.2% for Eta-HadGEM2-ES. The severity of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Hemileia vastatrix; Arabica coffee; Plant disease severity; Regional climate modelling; Spatial analyses. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102301 |
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